23998249517 has 16 divisors (see below), whose sum is σ = 26532489600. Its totient is φ = 21523856640.

The previous prime is 23998249501. The next prime is 23998249537. The reversal of 23998249517 is 71594289932.

It is not a de Polignac number, because 23998249517 - 2⁴ = 23998249501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23998249537) 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 in 15 ways as a sum of consecutive naturals, for example, 420584 + ... + 474222.

It is an arithmetic number, because the mean of its divisors is an integer number (1658280600).

Almost surely, 2^23998249517 is an apocalyptic number.

It is an amenable number.

23998249517 is a deficient number, since it is larger than the sum of its proper divisors (2534240083).

23998249517 is a wasteful number, since it uses less digits than its factorization.

23998249517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54196.

The product of its digits is 9797760, while the sum is 59.

The spelling of 23998249517 in words is "twenty-three billion, nine hundred ninety-eight million, two hundred forty-nine thousand, five hundred seventeen".