23998037569 has 9 divisors (see below), whose sum is σ = 26379881409. Its totient is φ = 21814848660.

The previous prime is 23998037563. The next prime is 23998037587. The reversal of 23998037569 is 96573089932.

The square root of 23998037569 is 154913.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 23998037569 - 2⁵ = 23998037537 is a prime.

It is a super-2 number, since 2×23998037569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23998037563) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1697002 + ... + 1711084.

Almost surely, 2^23998037569 is an apocalyptic number.

23998037569 is the 154913-rd square number.

23998037569 is the 77457-th centered octagonal number.

It is an amenable number.

23998037569 is a deficient number, since it is larger than the sum of its proper divisors (2381843840).

23998037569 is an frugal number, since it uses more digits than its factorization.

23998037569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28188 (or 14094 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 23998037569 in words is "twenty-three billion, nine hundred ninety-eight million, thirty-seven thousand, five hundred sixty-nine".