79719698635 has 4 divisors (see below), whose sum is σ = 95663638368. Its totient is φ = 63775758904.

The previous prime is 79719698593. The next prime is 79719698657. The reversal of 79719698635 is 53689691797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53689691797 = 7 ⋅7669955971.

It is a cyclic number.

It is not a de Polignac number, because 79719698635 - 2⁷ = 79719698507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 7971969859 + ... + 7971969868.

It is an arithmetic number, because the mean of its divisors is an integer number (23915909592).

Almost surely, 2^79719698635 is an apocalyptic number.

79719698635 is a deficient number, since it is larger than the sum of its proper divisors (15943939733).

79719698635 is a wasteful number, since it uses less digits than its factorization.

79719698635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15943939732.

The product of its digits is 154314720, while the sum is 70.

The spelling of 79719698635 in words is "seventy-nine billion, seven hundred nineteen million, six hundred ninety-eight thousand, six hundred thirty-five".