Duecillion

The duecillion is equal to \(10^{3 \times 10^{36}+3}\), or \(10^{3\text{ undecillion }3}\). The term was coined by Jonathan Bowers. It is 3×1036+4 digits long.

Duecillion is also known as one milliamilliamilliamilliamilliamilliamilliamilliamilliamilliamilliamilliatillion according to Landon Curt Noll's The English name of a number.

Etymology
The name of this number is based on the suffix "-illion" and the prefix "dueco-".