111611101604 has 48 divisors (see below), whose sum is σ = 203816088000. Its totient is φ = 53412944256.

The previous prime is 111611101601. The next prime is 111611101643. The reversal of 111611101604 is 406101116111.

It is a super-2 number, since 2×111611101604² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111611101604.

It is not an unprimeable number, because it can be changed into a prime (111611101601) 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, 9033359 + ... + 9045705.

It is an arithmetic number, because the mean of its divisors is an integer number (4246168500).

Almost surely, 2^111611101604 is an apocalyptic number.

It is an amenable number.

111611101604 is a deficient number, since it is larger than the sum of its proper divisors (92204986396).

111611101604 is a wasteful number, since it uses less digits than its factorization.

111611101604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052 (or 13050 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 111611101604 its reverse (406101116111), we get a palindrome (517712217715).

The spelling of 111611101604 in words is "one hundred eleven billion, six hundred eleven million, one hundred one thousand, six hundred four".