system
A chat on subreddit /r/wallstreetbets
human
If your ounce price is correct, it would weigh 955,109,837.631 oz, or 59,694,364.852 lbs, or almost 30,000 tons.
gpt
Density of platinum = 21.45 g/cc
Weight of coin = 59,694,365 lbs = 27,076,908 kg

Total volume of coin = (0.02145kg/cc) * (27,076,908 kg) ~~ 580,800 cubic centimeters

Approximate coin aspect ratio = 1:14

Coin volume = 580,800 cc
Cylinder diameter = 2* (sqrt(V/(pi*h)))
Cylinder diameter = 2*(sqrt(580,800 cc / (3.1415*(1/14 d)))
Cylinder diameter= 217.95 cm ~ 2.18 meters

Coin size = 2.18 meters x 0.15 meters
(Or 7.15 feet x 6")

Someone else check this, doesn't seem like a big enough coin to be worth a trilly