79596919817 has 4 divisors (see below), whose sum is σ = 82341641220. Its totient is φ = 76852198416.

The previous prime is 79596919807. The next prime is 79596919847. The reversal of 79596919817 is 71891969597.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67178937721 + 12417982096 = 259189^2 + 111436^2 .

It is a cyclic number.

It is not a de Polignac number, because 79596919817 - 2²⁴ = 79580142601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79596919807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372360658 + ... + 1372360715.

It is an arithmetic number, because the mean of its divisors is an integer number (20585410305).

Almost surely, 2^79596919817 is an apocalyptic number.

It is an amenable number.

79596919817 is a deficient number, since it is larger than the sum of its proper divisors (2744721403).

79596919817 is a wasteful number, since it uses less digits than its factorization.

79596919817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744721402.

The product of its digits is 77157360, while the sum is 71.

The spelling of 79596919817 in words is "seventy-nine billion, five hundred ninety-six million, nine hundred nineteen thousand, eight hundred seventeen".