Quadrixvigintiv

The quadrixvigintiv is equal to 999,944,444,444,444,444,444,444. The term was coined by André Joyce.

Its prime factorization is 22 × 11 × 101 × 2,729 × 82,451,447,783,107,369.

Etymology
The 4 parts of the name, “quadr”, “ix”, “vigint” and “iv”, mean 4, 9, 20 and 4, respectively.