79689166198697 has 8 divisors (see below), whose sum is σ = 87910418279520. Its totient is φ = 71630711188960.

The previous prime is 79689166198613. The next prime is 79689166198769.

79689166198697 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79689166198697 - 2¹⁸ = 79689165936553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79689166198897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40699266743 + ... + 40699268700.

It is an arithmetic number, because the mean of its divisors is an integer number (10988802284940).

Almost surely, 2^{79689166198697} is an apocalyptic number.

It is an amenable number.

79689166198697 is a deficient number, since it is larger than the sum of its proper divisors (8221252080823).

79689166198697 is a wasteful number, since it uses less digits than its factorization.

79689166198697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81398535543.

The product of its digits is 26665583616, while the sum is 92.

The spelling of 79689166198697 in words is "seventy-nine trillion, six hundred eighty-nine billion, one hundred sixty-six million, one hundred ninety-eight thousand, six hundred ninety-seven".