111872612168 has 64 divisors (see below), whose sum is σ = 223670108160. Its totient is φ = 52335021376.

The previous prime is 111872612143. The next prime is 111872612183. The reversal of 111872612168 is 861216278111.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21989321 + ... + 21994407.

It is an arithmetic number, because the mean of its divisors is an integer number (3494845440).

Almost surely, 2^111872612168 is an apocalyptic number.

It is an amenable number.

111872612168 is a deficient number, since it is larger than the sum of its proper divisors (111797495992).

111872612168 is a wasteful number, since it uses less digits than its factorization.

111872612168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706 (or 7702 counting only the distinct ones).

The product of its digits is 64512, while the sum is 44.

The spelling of 111872612168 in words is "one hundred eleven billion, eight hundred seventy-two million, six hundred twelve thousand, one hundred sixty-eight".