23557688675531 has 4 divisors (see below), whose sum is σ = 23558216670864. Its totient is φ = 23557160680200.

The previous prime is 23557688675527. The next prime is 23557688675567. The reversal of 23557688675531 is 13557688675532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23557688675531 - 2² = 23557688675527 is a prime.

It is a super-2 number, since 2×23557688675531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23557688675831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263930735 + ... + 264019976.

It is an arithmetic number, because the mean of its divisors is an integer number (5889554167716).

Almost surely, 2^{23557688675531} is an apocalyptic number.

23557688675531 is a deficient number, since it is larger than the sum of its proper divisors (527995333).

23557688675531 is an equidigital number, since it uses as much as digits as its factorization.

23557688675531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527995332.

The product of its digits is 1270080000, while the sum is 71.

Subtracting from 23557688675531 its reverse (13557688675532), we obtain a palindrome (9999999999999).

The spelling of 23557688675531 in words is "twenty-three trillion, five hundred fifty-seven billion, six hundred eighty-eight million, six hundred seventy-five thousand, five hundred thirty-one".