23631463657 has 2 divisors, whose sum is σ = 23631463658. Its totient is φ = 23631463656.

The previous prime is 23631463621. The next prime is 23631463679. The reversal of 23631463657 is 75636413632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23202600976 + 428862681 = 152324^2 + 20709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23631463657 is a prime.

It is a super-2 number, since 2×23631463657² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23631461657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11815731828 + 11815731829.

It is an arithmetic number, because the mean of its divisors is an integer number (11815731829).

Almost surely, 2^23631463657 is an apocalyptic number.

It is an amenable number.

23631463657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23631463657 is an equidigital number, since it uses as much as digits as its factorization.

23631463657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 46.

The spelling of 23631463657 in words is "twenty-three billion, six hundred thirty-one million, four hundred sixty-three thousand, six hundred fifty-seven".