79475305317 has 16 divisors (see below), whose sum is σ = 108601328640. Its totient is φ = 51682570992.

The previous prime is 79475305313. The next prime is 79475305361. The reversal of 79475305317 is 71350357497.

It is a happy number.

It is not a de Polignac number, because 79475305317 - 2² = 79475305313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79475305317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79475305313) 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, 2000443 + ... + 2039784.

It is an arithmetic number, because the mean of its divisors is an integer number (6787583040).

Almost surely, 2^79475305317 is an apocalyptic number.

It is an amenable number.

79475305317 is a deficient number, since it is larger than the sum of its proper divisors (29126023323).

79475305317 is a wasteful number, since it uses less digits than its factorization.

79475305317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040392.

The product of its (nonzero) digits is 2778300, while the sum is 51.

The spelling of 79475305317 in words is "seventy-nine billion, four hundred seventy-five million, three hundred five thousand, three hundred seventeen".