111982721964 has 48 divisors (see below), whose sum is σ = 267439011840. Its totient is φ = 36450025920.

The previous prime is 111982721933. The next prime is 111982721993. The reversal of 111982721964 is 469127289111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2119954 + ... + 2172134.

It is an arithmetic number, because the mean of its divisors is an integer number (5571646080).

Almost surely, 2^111982721964 is an apocalyptic number.

It is an amenable number.

111982721964 is an abundant number, since it is smaller than the sum of its proper divisors (155456289876).

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

111982721964 is a wasteful number, since it uses less digits than its factorization.

111982721964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56390 (or 56388 counting only the distinct ones).

The product of its digits is 435456, while the sum is 51.

The spelling of 111982721964 in words is "one hundred eleven billion, nine hundred eighty-two million, seven hundred twenty-one thousand, nine hundred sixty-four".