23889996157 has 4 divisors (see below), whose sum is σ = 24177827520. Its totient is φ = 23602164796.

The previous prime is 23889996121. The next prime is 23889996197. The reversal of 23889996157 is 75169998832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23889996157 - 2³¹ = 21742512509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23889996092 and 23889996101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23889996107) 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, 143915557 + ... + 143915722.

It is an arithmetic number, because the mean of its divisors is an integer number (6044456880).

Almost surely, 2^23889996157 is an apocalyptic number.

It is an amenable number.

23889996157 is a deficient number, since it is larger than the sum of its proper divisors (287831363).

23889996157 is an equidigital number, since it uses as much as digits as its factorization.

23889996157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287831362.

The product of its digits is 58786560, while the sum is 67.

The spelling of 23889996157 in words is "twenty-three billion, eight hundred eighty-nine million, nine hundred ninety-six thousand, one hundred fifty-seven".