111945979168868 has 96 divisors (see below), whose sum is σ = 218077762468608. Its totient is φ = 49946289292800.

The previous prime is 111945979168789. The next prime is 111945979168871. The reversal of 111945979168868 is 868861979549111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 687839063 + ... + 688001793.

It is an arithmetic number, because the mean of its divisors is an integer number (2271643359048).

Almost surely, 2^{111945979168868} is an apocalyptic number.

It is an amenable number.

111945979168868 is a deficient number, since it is larger than the sum of its proper divisors (106131783299740).

111945979168868 is a wasteful number, since it uses less digits than its factorization.

111945979168868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165093 (or 165091 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 83.

The spelling of 111945979168868 in words is "one hundred eleven trillion, nine hundred forty-five billion, nine hundred seventy-nine million, one hundred sixty-eight thousand, eight hundred sixty-eight".