111916109604 has 48 divisors (see below), whose sum is σ = 290296885760. Its totient is φ = 33324894720.

The previous prime is 111916109551. The next prime is 111916109609. The reversal of 111916109604 is 406901619111.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (111916109609) 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 15 ways as a sum of consecutive naturals, for example, 11566309 + ... + 11575980.

Almost surely, 2^111916109604 is an apocalyptic number.

It is an amenable number.

111916109604 is an abundant number, since it is smaller than the sum of its proper divisors (178380776156).

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

111916109604 is a wasteful number, since it uses less digits than its factorization.

111916109604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142340 (or 23142338 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 111916109604 in words is "one hundred eleven billion, nine hundred sixteen million, one hundred nine thousand, six hundred four".