111797969920 has 704 divisors, whose sum is σ = 354240391680. Its totient is φ = 32869711872.

The previous prime is 111797969911. The next prime is 111797969947. The reversal of 111797969920 is 29969797111.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 646230954 + ... + 646231126.

Almost surely, 2^111797969920 is an apocalyptic number.

111797969920 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 111797969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177120195840).

111797969920 is an abundant number, since it is smaller than the sum of its proper divisors (242442421760).

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

111797969920 is a wasteful number, since it uses less digits than its factorization.

111797969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 3857868, while the sum is 61.

The spelling of 111797969920 in words is "one hundred eleven billion, seven hundred ninety-seven million, nine hundred sixty-nine thousand, nine hundred twenty".