23304821157 has 6 divisors (see below), whose sum is σ = 33662519462. Its totient is φ = 15536547432.

The previous prime is 23304821153. The next prime is 23304821207. The reversal of 23304821157 is 75112840332.

23304821157 is a `hidden beast` number, since 23 + 3 + 0 + 482 + 1 + 157 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20876204196 + 2428616961 = 144486^2 + 49281^2 .

It is not a de Polignac number, because 23304821157 - 2² = 23304821153 is a prime.

It is a super-2 number, since 2×23304821157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23304821153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1294712278 + ... + 1294712295.

Almost surely, 2^23304821157 is an apocalyptic number.

It is an amenable number.

23304821157 is a deficient number, since it is larger than the sum of its proper divisors (10357698305).

23304821157 is a wasteful number, since it uses less digits than its factorization.

23304821157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589424579 (or 2589424576 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 23304821157 in words is "twenty-three billion, three hundred four million, eight hundred twenty-one thousand, one hundred fifty-seven".