Is centillion the last big number with a name?

In the rules of Pi aka π, there will be always more, countless, endless, LARGER NUMBERS. infinity is larger than we know, I think a very small percentage like "0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000-1" of numbers were named/made/and counted.