23291495172 has 36 divisors (see below), whose sum is σ = 64228063536. Its totient is φ = 7058028720.

The previous prime is 23291495159. The next prime is 23291495221. The reversal of 23291495172 is 27159419232.

23291495172 is a `hidden beast` number, since 2 + 3 + 2 + 91 + 49 + 517 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29408058 + ... + 29408849.

It is an arithmetic number, because the mean of its divisors is an integer number (1784112876).

Almost surely, 2^23291495172 is an apocalyptic number.

23291495172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23291495172 is an abundant number, since it is smaller than the sum of its proper divisors (40936568364).

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

23291495172 is a wasteful number, since it uses less digits than its factorization.

23291495172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58816928 (or 58816923 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 23291495172 in words is "twenty-three billion, two hundred ninety-one million, four hundred ninety-five thousand, one hundred seventy-two".