111851117964 has 18 divisors (see below), whose sum is σ = 282734770500. Its totient is φ = 37283705976.

The previous prime is 111851117953. The next prime is 111851117981. The reversal of 111851117964 is 469711158111.

111851117964 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 511 + 1 + 79 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1553487714 + ... + 1553487785.

It is an arithmetic number, because the mean of its divisors is an integer number (15707487250).

Almost surely, 2^111851117964 is an apocalyptic number.

It is an amenable number.

111851117964 is an abundant number, since it is smaller than the sum of its proper divisors (170883652536).

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

111851117964 is a wasteful number, since it uses less digits than its factorization.

111851117964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106975509 (or 3106975504 counting only the distinct ones).

The product of its digits is 60480, while the sum is 45.

The spelling of 111851117964 in words is "one hundred eleven billion, eight hundred fifty-one million, one hundred seventeen thousand, nine hundred sixty-four".