23536775917 has 2 divisors, whose sum is σ = 23536775918. Its totient is φ = 23536775916.

The previous prime is 23536775903. The next prime is 23536775957. The reversal of 23536775917 is 71957763532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20838077316 + 2698698601 = 144354^2 + 51949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23536775917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23536775957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11768387958 + 11768387959.

It is an arithmetic number, because the mean of its divisors is an integer number (11768387959).

Almost surely, 2^23536775917 is an apocalyptic number.

It is an amenable number.

23536775917 is a deficient number, since it is larger than the sum of its proper divisors (1).

23536775917 is an equidigital number, since it uses as much as digits as its factorization.

23536775917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8334900, while the sum is 55.

The spelling of 23536775917 in words is "twenty-three billion, five hundred thirty-six million, seven hundred seventy-five thousand, nine hundred seventeen".