23115522120 has 64 divisors (see below), whose sum is σ = 69403072320. Its totient is φ = 6159116544.

The previous prime is 23115522109. The next prime is 23115522139. The reversal of 23115522120 is 2122551132.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 70579 + ... + 226301.

It is an arithmetic number, because the mean of its divisors is an integer number (1084423005).

Almost surely, 2^23115522120 is an apocalyptic number.

23115522120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23115522120 is an abundant number, since it is smaller than the sum of its proper divisors (46287550200).

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

23115522120 is a wasteful number, since it uses less digits than its factorization.

23115522120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156974 (or 156970 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 23115522120 in words is "twenty-three billion, one hundred fifteen million, five hundred twenty-two thousand, one hundred twenty".