111477938880 has 672 divisors, whose sum is σ = 454237636608. Its totient is φ = 22663618560.

The previous prime is 111477938849. The next prime is 111477938903. The reversal of 111477938880 is 88839774111.

It is a tau number, because it is divible by the number of its divisors (672).

It is a self number, because there is not a number n which added to its sum of digits gives 111477938880.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38215182 + ... + 38218098.

It is an arithmetic number, because the mean of its divisors is an integer number (675948864).

Almost surely, 2^111477938880 is an apocalyptic number.

111477938880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111477938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227118818304).

111477938880 is an abundant number, since it is smaller than the sum of its proper divisors (342759697728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111477938880 is a wasteful number, since it uses less digits than its factorization.

111477938880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 57.

The spelling of 111477938880 in words is "one hundred eleven billion, four hundred seventy-seven million, nine hundred thirty-eight thousand, eight hundred eighty".