111604656163 has 16 divisors (see below), whose sum is σ = 149846812416. Its totient is φ = 80275076640.

The previous prime is 111604656161. The next prime is 111604656181. The reversal of 111604656163 is 361656406111.

It is not a de Polignac number, because 111604656163 - 2¹ = 111604656161 is a prime.

It is a super-2 number, since 2×111604656163² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111604656161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55745581 + ... + 55747582.

It is an arithmetic number, because the mean of its divisors is an integer number (9365425776).

Almost surely, 2^111604656163 is an apocalyptic number.

111604656163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111604656163 is a deficient number, since it is larger than the sum of its proper divisors (38242156253).

111604656163 is a wasteful number, since it uses less digits than its factorization.

111604656163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111493194.

The product of its (nonzero) digits is 77760, while the sum is 40.

It can be divided in two parts, 111604 and 656163, that added together give a palindrome (767767).

The spelling of 111604656163 in words is "one hundred eleven billion, six hundred four million, six hundred fifty-six thousand, one hundred sixty-three".