23156636321 has 8 divisors (see below), whose sum is σ = 28500475584. Its totient is φ = 18321734160.

The previous prime is 23156636311. The next prime is 23156636323. The reversal of 23156636321 is 12363665132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23156636321 - 2¹⁸ = 23156374177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23156636323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127234175 + ... + 127234356.

It is an arithmetic number, because the mean of its divisors is an integer number (3562559448).

Almost surely, 2^23156636321 is an apocalyptic number.

It is an amenable number.

23156636321 is a deficient number, since it is larger than the sum of its proper divisors (5343839263).

23156636321 is a wasteful number, since it uses less digits than its factorization.

23156636321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254468551.

The product of its digits is 116640, while the sum is 38.

The spelling of 23156636321 in words is "twenty-three billion, one hundred fifty-six million, six hundred thirty-six thousand, three hundred twenty-one".