111851117928 has 96 divisors (see below), whose sum is σ = 333071631360. Its totient is φ = 33627363840.

The previous prime is 111851117921. The next prime is 111851117941. The reversal of 111851117928 is 829711158111.

It is a happy number.

111851117928 is a `hidden beast` number, since 1 + 118 + 511 + 17 + 9 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (111851117921) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 455425 + ... + 656592.

It is an arithmetic number, because the mean of its divisors is an integer number (3469496160).

Almost surely, 2^111851117928 is an apocalyptic number.

111851117928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111851117928 is an abundant number, since it is smaller than the sum of its proper divisors (221220513432).

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

111851117928 is a wasteful number, since it uses less digits than its factorization.

111851117928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112167 (or 1112160 counting only the distinct ones).

The product of its digits is 40320, while the sum is 45.

The spelling of 111851117928 in words is "one hundred eleven billion, eight hundred fifty-one million, one hundred seventeen thousand, nine hundred twenty-eight".