in 'most' of the world, every 3 zeros gets a new name. Besides being more consistent, it saves a LOT of ink. ;>)

million, billion, trillion, quadrillion, quintillion, sextillion, septillion, octillion..etc..

about big numbers Note, it lists 'traditional' British usage and 'modern' British usage.

Numbers larger than quadrillion usually are done in scientific notation, anyway. 10²³