79200506581 has 16 divisors (see below), whose sum is σ = 95341542400. Its totient is φ = 65696263920.

The previous prime is 79200506549. The next prime is 79200506591. The reversal of 79200506581 is 18560500297.

It is not a de Polignac number, because 79200506581 - 2⁵ = 79200506549 is a prime.

It is a super-2 number, since 2×79200506581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79200506591) 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, 3713646 + ... + 3734911.

It is an arithmetic number, because the mean of its divisors is an integer number (5958846400).

Almost surely, 2^79200506581 is an apocalyptic number.

It is an amenable number.

79200506581 is a deficient number, since it is larger than the sum of its proper divisors (16141035819).

79200506581 is an equidigital number, since it uses as much as digits as its factorization.

79200506581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7448609 (or 7448595 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 79200506581 in words is "seventy-nine billion, two hundred million, five hundred six thousand, five hundred eighty-one".