79193894417 has 4 divisors (see below), whose sum is σ = 86393339376. Its totient is φ = 71994449460.

The previous prime is 79193894413. The next prime is 79193894431. The reversal of 79193894417 is 71449839197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79193894417 - 2² = 79193894413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79193894417.

It is not an unprimeable number, because it can be changed into a prime (79193894413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3599722463 + ... + 3599722484.

It is an arithmetic number, because the mean of its divisors is an integer number (21598334844).

Almost surely, 2^79193894417 is an apocalyptic number.

It is an amenable number.

79193894417 is a deficient number, since it is larger than the sum of its proper divisors (7199444959).

79193894417 is a wasteful number, since it uses less digits than its factorization.

79193894417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199444958.

The product of its digits is 13716864, while the sum is 62.

The spelling of 79193894417 in words is "seventy-nine billion, one hundred ninety-three million, eight hundred ninety-four thousand, four hundred seventeen".