79386657679 has 36 divisors (see below), whose sum is σ = 98699421600. Its totient is φ = 63647228736.

The previous prime is 79386657673. The next prime is 79386657697. The reversal of 79386657679 is 97675668397.

It is not a de Polignac number, because 79386657679 - 2²³ = 79378269071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79386657673) 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 35 ways as a sum of consecutive naturals, for example, 1369027 + ... + 1425835.

It is an arithmetic number, because the mean of its divisors is an integer number (2741650600).

Almost surely, 2^79386657679 is an apocalyptic number.

79386657679 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

79386657679 is a deficient number, since it is larger than the sum of its proper divisors (19312763921).

79386657679 is a wasteful number, since it uses less digits than its factorization.

79386657679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56940 (or 56914 counting only the distinct ones).

The product of its digits is 720135360, while the sum is 73.

The spelling of 79386657679 in words is "seventy-nine billion, three hundred eighty-six million, six hundred fifty-seven thousand, six hundred seventy-nine".