79055874817 has 4 divisors (see below), whose sum is σ = 79056446400. Its totient is φ = 79055303236.

The previous prime is 79055874811. The next prime is 79055874853. The reversal of 79055874817 is 71847855097.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79055874817 - 2¹⁵ = 79055842049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79055874811) 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, 66108 + ... + 403090.

It is an arithmetic number, because the mean of its divisors is an integer number (19764111600).

Almost surely, 2^79055874817 is an apocalyptic number.

It is an amenable number.

79055874817 is a deficient number, since it is larger than the sum of its proper divisors (571583).

79055874817 is a wasteful number, since it uses less digits than its factorization.

79055874817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571582.

The product of its (nonzero) digits is 19756800, while the sum is 61.

The spelling of 79055874817 in words is "seventy-nine billion, fifty-five million, eight hundred seventy-four thousand, eight hundred seventeen".