79225742491 has 16 divisors (see below), whose sum is σ = 91027353600. Its totient is φ = 67545260640.

The previous prime is 79225742483. The next prime is 79225742513. The reversal of 79225742491 is 19424752297.

It is a cyclic number.

It is not a de Polignac number, because 79225742491 - 2³ = 79225742483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79225745491) 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, 5742021 + ... + 5755801.

It is an arithmetic number, because the mean of its divisors is an integer number (5689209600).

Almost surely, 2^79225742491 is an apocalyptic number.

79225742491 is a deficient number, since it is larger than the sum of its proper divisors (11801611109).

79225742491 is a wasteful number, since it uses less digits than its factorization.

79225742491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114.

The product of its digits is 2540160, while the sum is 52.

The spelling of 79225742491 in words is "seventy-nine billion, two hundred twenty-five million, seven hundred forty-two thousand, four hundred ninety-one".