23923767979 has 2 divisors, whose sum is σ = 23923767980. Its totient is φ = 23923767978.

The previous prime is 23923767961. The next prime is 23923767991. The reversal of 23923767979 is 97976732932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23923767979 - 2¹⁵ = 23923735211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23923767979.

It is not a weakly prime, because it can be changed into another prime (23923764979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11961883989 + 11961883990.

It is an arithmetic number, because the mean of its divisors is an integer number (11961883990).

Almost surely, 2^23923767979 is an apocalyptic number.

23923767979 is a deficient number, since it is larger than the sum of its proper divisors (1).

23923767979 is an equidigital number, since it uses as much as digits as its factorization.

23923767979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54010152, while the sum is 64.

The spelling of 23923767979 in words is "twenty-three billion, nine hundred twenty-three million, seven hundred sixty-seven thousand, nine hundred seventy-nine".