23516939689 has 2 divisors, whose sum is σ = 23516939690. Its totient is φ = 23516939688.

The previous prime is 23516939659. The next prime is 23516939701. The reversal of 23516939689 is 98693961532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23144449689 + 372490000 = 152133^2 + 19300^2 .

It is a cyclic number.

It is not a de Polignac number, because 23516939689 - 2¹⁵ = 23516906921 is a prime.

It is not a weakly prime, because it can be changed into another prime (23516939659) 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, 11758469844 + 11758469845.

It is an arithmetic number, because the mean of its divisors is an integer number (11758469845).

Almost surely, 2^23516939689 is an apocalyptic number.

It is an amenable number.

23516939689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23516939689 is an equidigital number, since it uses as much as digits as its factorization.

23516939689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18895680, while the sum is 61.

The spelling of 23516939689 in words is "twenty-three billion, five hundred sixteen million, nine hundred thirty-nine thousand, six hundred eighty-nine".