23177722879 has 2 divisors, whose sum is σ = 23177722880. Its totient is φ = 23177722878.

The previous prime is 23177722853. The next prime is 23177722901. The reversal of 23177722879 is 97822777132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23177722879 - 2²³ = 23169334271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23177722079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11588861439 + 11588861440.

It is an arithmetic number, because the mean of its divisors is an integer number (11588861440).

Almost surely, 2^23177722879 is an apocalyptic number.

23177722879 is a deficient number, since it is larger than the sum of its proper divisors (1).

23177722879 is an equidigital number, since it uses as much as digits as its factorization.

23177722879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4148928, while the sum is 55.

The spelling of 23177722879 in words is "twenty-three billion, one hundred seventy-seven million, seven hundred twenty-two thousand, eight hundred seventy-nine".