111564117992 has 32 divisors (see below), whose sum is σ = 221649981120. Its totient is φ = 52462268160.

The previous prime is 111564117967. The next prime is 111564118013. The reversal of 111564117992 is 299711465111.

It is a super-2 number, since 2×111564117992² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114134 + ... + 485957.

It is an arithmetic number, because the mean of its divisors is an integer number (6926561910).

Almost surely, 2^111564117992 is an apocalyptic number.

It is an amenable number.

111564117992 is a deficient number, since it is larger than the sum of its proper divisors (110085863128).

111564117992 is a wasteful number, since it uses less digits than its factorization.

111564117992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601481 (or 601477 counting only the distinct ones).

The product of its digits is 136080, while the sum is 47.

The spelling of 111564117992 in words is "one hundred eleven billion, five hundred sixty-four million, one hundred seventeen thousand, nine hundred ninety-two".