Theres still more to come after Peta (1x10^15) = 1 000 000 000 000 000) expect to see these in the future:
Exa (1x10^1

= 1 000 000 000 000 000 000
Zetta (1x10^21) = 1 000 000 000 000 000 000 000
Yotta (1x10^24) = 1 000 000 000 000 000 000 000 000
I have to know up to tera for A-Level Physics but we rarley use that mostly stuff like this e.g. 1 Kilometer is also expressable as 1x10^3 meters.