79556298791 has 4 divisors (see below), whose sum is σ = 79565902584. Its totient is φ = 79546695000.

The previous prime is 79556298721. The next prime is 79556298817. The reversal of 79556298791 is 19789265597.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79556298791 - 2¹⁸ = 79556036647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79556298721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4789460 + ... + 4806041.

It is an arithmetic number, because the mean of its divisors is an integer number (19891475646).

Almost surely, 2^79556298791 is an apocalyptic number.

79556298791 is a deficient number, since it is larger than the sum of its proper divisors (9603793).

79556298791 is an equidigital number, since it uses as much as digits as its factorization.

79556298791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9603792.

The product of its digits is 85730400, while the sum is 68.

The spelling of 79556298791 in words is "seventy-nine billion, five hundred fifty-six million, two hundred ninety-eight thousand, seven hundred ninety-one".