23646640631 has 2 divisors, whose sum is σ = 23646640632. Its totient is φ = 23646640630.

The previous prime is 23646640597. The next prime is 23646640639. The reversal of 23646640631 is 13604664632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23646640631 - 2¹⁴ = 23646624247 is a prime.

It is a super-2 number, since 2×23646640631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23646640639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11823320315 + 11823320316.

It is an arithmetic number, because the mean of its divisors is an integer number (11823320316).

Almost surely, 2^23646640631 is an apocalyptic number.

23646640631 is a deficient number, since it is larger than the sum of its proper divisors (1).

23646640631 is an equidigital number, since it uses as much as digits as its factorization.

23646640631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 23646640631 in words is "twenty-three billion, six hundred forty-six million, six hundred forty thousand, six hundred thirty-one".