23592636721 has 2 divisors, whose sum is σ = 23592636722. Its totient is φ = 23592636720.

The previous prime is 23592636701. The next prime is 23592636803. The reversal of 23592636721 is 12763629532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14027796721 + 9564840000 = 118439^2 + 97800^2 .

It is a cyclic number.

It is not a de Polignac number, because 23592636721 - 2⁵ = 23592636689 is a prime.

It is a super-2 number, since 2×23592636721² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23592636701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11796318360 + 11796318361.

It is an arithmetic number, because the mean of its divisors is an integer number (11796318361).

Almost surely, 2^23592636721 is an apocalyptic number.

It is an amenable number.

23592636721 is a deficient number, since it is larger than the sum of its proper divisors (1).

23592636721 is an equidigital number, since it uses as much as digits as its factorization.

23592636721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 46.

The spelling of 23592636721 in words is "twenty-three billion, five hundred ninety-two million, six hundred thirty-six thousand, seven hundred twenty-one".