23956172994438 has 24 divisors (see below), whose sum is σ = 52884381895488. Its totient is φ = 7834723243152.

The previous prime is 23956172994433. The next prime is 23956172994443. The reversal of 23956172994438 is 83449927165932.

23956172994438 is a `hidden beast` number, since 2 + 3 + 9 + 5 + 6 + 172 + 9 + 9 + 443 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (23956172994433) and next prime (23956172994443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23956172994433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12555645270 + ... + 12555647177.

It is an arithmetic number, because the mean of its divisors is an integer number (2203515912312).

Almost surely, 2^{23956172994438} is an apocalyptic number.

23956172994438 is an abundant number, since it is smaller than the sum of its proper divisors (28928208901050).

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

23956172994438 is a wasteful number, since it uses less digits than its factorization.

23956172994438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25111292508 (or 25111292505 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 72.

The spelling of 23956172994438 in words is "twenty-three trillion, nine hundred fifty-six billion, one hundred seventy-two million, nine hundred ninety-four thousand, four hundred thirty-eight".