23957940529 has 2 divisors, whose sum is σ = 23957940530. Its totient is φ = 23957940528.

The previous prime is 23957940509. The next prime is 23957940571. The reversal of 23957940529 is 92504975932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23096400625 + 861539904 = 151975^2 + 29352^2 .

It is a cyclic number.

It is not a de Polignac number, because 23957940529 - 2²⁵ = 23924386097 is a prime.

It is a super-2 number, since 2×23957940529² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23957940529.

It is not a weakly prime, because it can be changed into another prime (23957940509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11978970264 + 11978970265.

It is an arithmetic number, because the mean of its divisors is an integer number (11978970265).

Almost surely, 2^23957940529 is an apocalyptic number.

It is an amenable number.

23957940529 is a deficient number, since it is larger than the sum of its proper divisors (1).

23957940529 is an equidigital number, since it uses as much as digits as its factorization.

23957940529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 23957940529 in words is "twenty-three billion, nine hundred fifty-seven million, nine hundred forty thousand, five hundred twenty-nine".