We should switch to scientific notation at this point.

One = 1e0

Ten = 1e1

Hundred = 1e2

Thousand = 1e3

Ten thousand = 1e4

Hundred thousand = 1e5

Million = 1e6

Billion = 1e9

Trillion = 1e12

Quadrillion = 1e15

Quintillion = 1e18

Etc.

Also simplifies combinations. E.g. One hundred billion = One * Hundred * Billion = 1e0 * 1e2 * 1e9 = 1e(0+2+9) = 1e11