English numerals
Number notation Power notation Short scale Long scale Indian ( or South Asian ) English
1,000,000 10 one million one million ten lakh
1,000,000,000 10 one billion a thousand million one milliard a thousand million one hundred crore ( one arab )
1,000,000,000,000 10 one trillion a thousand billion one billion a million million one lakh crore ( ten kharab )
1,000,000,000,000,000 10 one quadrillion a thousand trillion one billiard a thousand billion ten crore crore ( one padm )
1,000,000,000,000,000,000 10 one quintillion a thousand quadrillion one trillion a million billion ten thousand crore crore ( ten shankh )
1,000,000,000,000,000,000,000 10 one sextillion a thousand quintillion one trilliard a thousand trillion one crore crore crore
Cardinal numbers -- Very large numbers
For numbers above a million , three main systems name numbers in English ( for the use of prefixes such as kilo- for a thousand , mega- for a million , milli- for a thousandth , etc . see SI units ) : the long scale ( formerly used in British English but now less so ) designates a system of numeric names in which a thousand million is called a milliard , and billion is used for a million million . This system is still used in several other European languages . the short scale ( always used in American English and almost invariably in British English ) designates a system of numeric names in which a thousand million is called a billion , and the word milliard is not used . the Indian numbering system , used widely in South Asia . Many people have no direct experience of manipulating numbers this large , and many non-American readers may interpret billion as 1012 ( even if they are young enough to have been taught otherwise at school ) ; moreover , usage of the `` long '' billion is standard in some non-English speaking countries . For these reasons , defining the word may be advisable when writing for the public .
English number words include numerals and various words derived from them, as well as a large number of words borrowed from other languages.