23386165257 has 32 divisors (see below), whose sum is σ = 40397163520. Its totient is φ = 11686317120.

The previous prime is 23386165249. The next prime is 23386165289. The reversal of 23386165257 is 75256168332.

It is a happy number.

It is not a de Polignac number, because 23386165257 - 2³ = 23386165249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23386165217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2249119 + ... + 2259492.

It is an arithmetic number, because the mean of its divisors is an integer number (1262411360).

Almost surely, 2^23386165257 is an apocalyptic number.

It is an amenable number.

23386165257 is a deficient number, since it is larger than the sum of its proper divisors (17010998263).

23386165257 is a wasteful number, since it uses less digits than its factorization.

23386165257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508653.

The product of its digits is 1814400, while the sum is 48.

The spelling of 23386165257 in words is "twenty-three billion, three hundred eighty-six million, one hundred sixty-five thousand, two hundred fifty-seven".