23172493279 has 16 divisors (see below), whose sum is σ = 25563919360. Its totient is φ = 20873583360.

The previous prime is 23172493249. The next prime is 23172493339. The reversal of 23172493279 is 97239427132.

It is a cyclic number.

It is not a de Polignac number, because 23172493279 - 2⁵ = 23172493247 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 (23172493219) 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, 14334 + ... + 215755.

It is an arithmetic number, because the mean of its divisors is an integer number (1597744960).

Almost surely, 2^23172493279 is an apocalyptic number.

23172493279 is a deficient number, since it is larger than the sum of its proper divisors (2391426081).

23172493279 is a wasteful number, since it uses less digits than its factorization.

23172493279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230290.

The product of its digits is 1143072, while the sum is 49.

The spelling of 23172493279 in words is "twenty-three billion, one hundred seventy-two million, four hundred ninety-three thousand, two hundred seventy-nine".