79560157791 has 4 divisors (see below), whose sum is σ = 106080210392. Its totient is φ = 53040105192.

The previous prime is 79560157763. The next prime is 79560157799. The reversal of 79560157791 is 19775106597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19775106597 = 3 ⋅6591702199.

It is not a de Polignac number, because 79560157791 - 2⁵ = 79560157759 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 (79560157799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13260026296 + ... + 13260026301.

It is an arithmetic number, because the mean of its divisors is an integer number (26520052598).

Almost surely, 2^79560157791 is an apocalyptic number.

79560157791 is a deficient number, since it is larger than the sum of its proper divisors (26520052601).

79560157791 is a wasteful number, since it uses less digits than its factorization.

79560157791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26520052600.

The product of its (nonzero) digits is 4167450, while the sum is 57.

The spelling of 79560157791 in words is "seventy-nine billion, five hundred sixty million, one hundred fifty-seven thousand, seven hundred ninety-one".