79009819317 has 96 divisors (see below), whose sum is σ = 141340792320. Its totient is φ = 41813573760.

The previous prime is 79009819313. The next prime is 79009819367. The reversal of 79009819317 is 71391890097.

It is not a de Polignac number, because 79009819317 - 2² = 79009819313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79009819313) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20220678 + ... + 20224584.

It is an arithmetic number, because the mean of its divisors is an integer number (1472299920).

Almost surely, 2^79009819317 is an apocalyptic number.

It is an amenable number.

79009819317 is a deficient number, since it is larger than the sum of its proper divisors (62330973003).

79009819317 is a wasteful number, since it uses less digits than its factorization.

79009819317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783 (or 4780 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 54.

The spelling of 79009819317 in words is "seventy-nine billion, nine million, eight hundred nineteen thousand, three hundred seventeen".