23513456689 has 2 divisors, whose sum is σ = 23513456690. Its totient is φ = 23513456688.

The previous prime is 23513456677. The next prime is 23513456699. The reversal of 23513456689 is 98665431532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20554096689 + 2959360000 = 143367^2 + 54400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23513456689 is a prime.

It is not a weakly prime, because it can be changed into another prime (23513456699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11756728344 + 11756728345.

It is an arithmetic number, because the mean of its divisors is an integer number (11756728345).

Almost surely, 2^23513456689 is an apocalyptic number.

It is an amenable number.

23513456689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23513456689 is an equidigital number, since it uses as much as digits as its factorization.

23513456689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 52.

The spelling of 23513456689 in words is "twenty-three billion, five hundred thirteen million, four hundred fifty-six thousand, six hundred eighty-nine".