111660974887 has 16 divisors (see below), whose sum is σ = 140648884992. Its totient is φ = 86111550720.

The previous prime is 111660974857. The next prime is 111660974899. The reversal of 111660974887 is 788479066111.

It is a cyclic number.

It is not a de Polignac number, because 111660974887 - 2⁷ = 111660974759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111660974837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7467493 + ... + 7482430.

It is an arithmetic number, because the mean of its divisors is an integer number (8790555312).

Almost surely, 2^111660974887 is an apocalyptic number.

111660974887 is a deficient number, since it is larger than the sum of its proper divisors (28987910105).

111660974887 is a wasteful number, since it uses less digits than its factorization.

111660974887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14950038.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 111660974887 in words is "one hundred eleven billion, six hundred sixty million, nine hundred seventy-four thousand, eight hundred eighty-seven".