111501105500 has 48 divisors (see below), whose sum is σ = 243637377984. Its totient is φ = 44578654400.

The previous prime is 111501105497. The next prime is 111501105523. The reversal of 111501105500 is 5501105111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 990074 + ... + 1096926.

It is an arithmetic number, because the mean of its divisors is an integer number (5075778708).

Almost surely, 2^111501105500 is an apocalyptic number.

111501105500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111501105500 is an abundant number, since it is smaller than the sum of its proper divisors (132136272484).

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

111501105500 is a wasteful number, since it uses less digits than its factorization.

111501105500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108959 (or 108947 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 20.

The spelling of 111501105500 in words is "one hundred eleven billion, five hundred one million, one hundred five thousand, five hundred".