79980008997 has 16 divisors (see below), whose sum is σ = 121878703232. Its totient is φ = 45701210880.

The previous prime is 79980008989. The next prime is 79980009001.

79980008997 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 79980008997 - 2³ = 79980008989 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 (79980008917) 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, 756297 + ... + 855537.

It is an arithmetic number, because the mean of its divisors is an integer number (7617418952).

Almost surely, 2^79980008997 is an apocalyptic number.

It is an amenable number.

79980008997 is a deficient number, since it is larger than the sum of its proper divisors (41898694235).

79980008997 is a wasteful number, since it uses less digits than its factorization.

79980008997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137628.

The product of its (nonzero) digits is 20575296, while the sum is 66.

The spelling of 79980008997 in words is "seventy-nine billion, nine hundred eighty million, eight thousand, nine hundred ninety-seven".