23987698577 has 2 divisors, whose sum is σ = 23987698578. Its totient is φ = 23987698576.

The previous prime is 23987698571. The next prime is 23987698627. The reversal of 23987698577 is 77589678932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23967993856 + 19704721 = 154816^2 + 4439^2 .

It is a cyclic number.

It is not a de Polignac number, because 23987698577 - 2²⁰ = 23986650001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23987698577.

It is not a weakly prime, because it can be changed into another prime (23987698571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11993849288 + 11993849289.

It is an arithmetic number, because the mean of its divisors is an integer number (11993849289).

Almost surely, 2^23987698577 is an apocalyptic number.

It is an amenable number.

23987698577 is a deficient number, since it is larger than the sum of its proper divisors (1).

23987698577 is an equidigital number, since it uses as much as digits as its factorization.

23987698577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320060160, while the sum is 71.

The spelling of 23987698577 in words is "twenty-three billion, nine hundred eighty-seven million, six hundred ninety-eight thousand, five hundred seventy-seven".