23812135100721 has 24 divisors (see below), whose sum is σ = 39497002403040. Its totient is φ = 13672039291200.

The previous prime is 23812135100713. The next prime is 23812135100753. The reversal of 23812135100721 is 12700153121832.

23812135100721 is a `hidden beast` number, since 23 + 81 + 21 + 3 + 510 + 0 + 7 + 21 = 666.

It is not a de Polignac number, because 23812135100721 - 2³ = 23812135100713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23812135100791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6329645940 + ... + 6329649701.

It is an arithmetic number, because the mean of its divisors is an integer number (1645708433460).

Almost surely, 2^{23812135100721} is an apocalyptic number.

It is an amenable number.

23812135100721 is a deficient number, since it is larger than the sum of its proper divisors (15684867302319).

23812135100721 is a wasteful number, since it uses less digits than its factorization.

23812135100721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12659295677 (or 12659295674 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 23812135100721 in words is "twenty-three trillion, eight hundred twelve billion, one hundred thirty-five million, one hundred thousand, seven hundred twenty-one".