23256335657 has 2 divisors, whose sum is σ = 23256335658. Its totient is φ = 23256335656.

The previous prime is 23256335623. The next prime is 23256335689. The reversal of 23256335657 is 75653365232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23180367001 + 75968656 = 152251^2 + 8716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23256335657 is a prime.

It is not a weakly prime, because it can be changed into another prime (23256335357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11628167828 + 11628167829.

It is an arithmetic number, because the mean of its divisors is an integer number (11628167829).

Almost surely, 2^23256335657 is an apocalyptic number.

It is an amenable number.

23256335657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23256335657 is an equidigital number, since it uses as much as digits as its factorization.

23256335657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402000, while the sum is 47.

The spelling of 23256335657 in words is "twenty-three billion, two hundred fifty-six million, three hundred thirty-five thousand, six hundred fifty-seven".