23987698597 has 4 divisors (see below), whose sum is σ = 23998801036. Its totient is φ = 23976596160.

The previous prime is 23987698577. The next prime is 23987698627. The reversal of 23987698597 is 79589678932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9958243681 + 14029454916 = 99791^2 + 118446^2 .

It is a cyclic number.

It is not a de Polignac number, because 23987698597 - 2¹¹ = 23987696549 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 (23987698507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5547978 + ... + 5552299.

It is an arithmetic number, because the mean of its divisors is an integer number (5999700259).

Almost surely, 2^23987698597 is an apocalyptic number.

It is an amenable number.

23987698597 is a deficient number, since it is larger than the sum of its proper divisors (11102439).

23987698597 is a wasteful number, since it uses less digits than its factorization.

23987698597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102438.

The product of its digits is 411505920, while the sum is 73.

The spelling of 23987698597 in words is "twenty-three billion, nine hundred eighty-seven million, six hundred ninety-eight thousand, five hundred ninety-seven".