23709720761 has 2 divisors, whose sum is σ = 23709720762. Its totient is φ = 23709720760.

The previous prime is 23709720737. The next prime is 23709720829. The reversal of 23709720761 is 16702790732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23520823225 + 188897536 = 153365^2 + 13744^2 .

It is a cyclic number.

It is not a de Polignac number, because 23709720761 - 2²⁶ = 23642611897 is a prime.

It is not a weakly prime, because it can be changed into another prime (23709720161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11854860380 + 11854860381.

It is an arithmetic number, because the mean of its divisors is an integer number (11854860381).

Almost surely, 2^23709720761 is an apocalyptic number.

It is an amenable number.

23709720761 is a deficient number, since it is larger than the sum of its proper divisors (1).

23709720761 is an equidigital number, since it uses as much as digits as its factorization.

23709720761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 23709720761 in words is "twenty-three billion, seven hundred nine million, seven hundred twenty thousand, seven hundred sixty-one".