23749990173 has 144 divisors (see below), whose sum is σ = 44616499200. Its totient is φ = 12057776640.

The previous prime is 23749990169. The next prime is 23749990193. The reversal of 23749990173 is 37109994732.

It is not a de Polignac number, because 23749990173 - 2² = 23749990169 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23749990193) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 18568548 + ... + 18569826.

It is an arithmetic number, because the mean of its divisors is an integer number (309836800).

Almost surely, 2^23749990173 is an apocalyptic number.

It is an amenable number.

23749990173 is a deficient number, since it is larger than the sum of its proper divisors (20866509027).

23749990173 is a wasteful number, since it uses less digits than its factorization.

23749990173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The spelling of 23749990173 in words is "twenty-three billion, seven hundred forty-nine million, nine hundred ninety thousand, one hundred seventy-three".