23791971399 has 16 divisors (see below), whose sum is σ = 38162561280. Its totient is φ = 12879864000.

The previous prime is 23791971389. The next prime is 23791971409. The reversal of 23791971399 is 99317919732.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23791971389) and next prime (23791971409).

It is not a de Polignac number, because 23791971399 - 2⁷ = 23791971271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23791971349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29814102 + ... + 29814899.

It is an arithmetic number, because the mean of its divisors is an integer number (2385160080).

Almost surely, 2^23791971399 is an apocalyptic number.

23791971399 is a deficient number, since it is larger than the sum of its proper divisors (14370589881).

23791971399 is a wasteful number, since it uses less digits than its factorization.

23791971399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59629030.

The product of its digits is 5786802, while the sum is 60.

The spelling of 23791971399 in words is "twenty-three billion, seven hundred ninety-one million, nine hundred seventy-one thousand, three hundred ninety-nine".