23766865957 has 2 divisors, whose sum is σ = 23766865958. Its totient is φ = 23766865956.

The previous prime is 23766865907. The next prime is 23766865999. The reversal of 23766865957 is 75956866732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15844263876 + 7922602081 = 125874^2 + 89009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23766865957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23766865907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11883432978 + 11883432979.

It is an arithmetic number, because the mean of its divisors is an integer number (11883432979).

Almost surely, 2^23766865957 is an apocalyptic number.

It is an amenable number.

23766865957 is a deficient number, since it is larger than the sum of its proper divisors (1).

23766865957 is an equidigital number, since it uses as much as digits as its factorization.

23766865957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114307200, while the sum is 64.

The spelling of 23766865957 in words is "twenty-three billion, seven hundred sixty-six million, eight hundred sixty-five thousand, nine hundred fifty-seven".