Octosexagintillion belongs to the extended system of names for very large numbers, following the pattern that gives us million, billion and trillion. The word combines a prefix indicating its place in that sequence with the shared illion ending. Clips pronouncing names like this circulate online because the scale is hard to picture and the word itself is entertaining to hear and attempt. Short pronunciations are shared on soundboards for counting jokes, fake statistics and reaction edits where a real number would be far less memorable.