23009172560 has 40 divisors (see below), whose sum is σ = 58359630816. Its totient is φ = 8366971520.

The previous prime is 23009172551. The next prime is 23009172587. The reversal of 23009172560 is 6527190032.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 23009172560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13072514 + ... + 13074273.

Almost surely, 2^23009172560 is an apocalyptic number.

23009172560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23009172560 is an abundant number, since it is smaller than the sum of its proper divisors (35350458256).

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

23009172560 is a wasteful number, since it uses less digits than its factorization.

23009172560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26146811 (or 26146805 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 23009172560 in words is "twenty-three billion, nine million, one hundred seventy-two thousand, five hundred sixty".