Same rules as any No Sprite Number Evolutions, but you'll morph to the next power of 10 instead of by 1. Don't add any sprites AND don't delete the thumbnail. The number has changed - it might be more beyong of anywhere someone used to it. But Example of this number: 1 000 000 000 000 000 000 == 1e+18 (Yep, that's better.)
c2a.