79717398844 has 12 divisors (see below), whose sum is σ = 141792422968. Its totient is φ = 39205278000.

The previous prime is 79717398821. The next prime is 79717398851. The reversal of 79717398844 is 44889371797.

It is a self number, because there is not a number n which added to its sum of digits gives 79717398844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163355082 + ... + 163355569.

Almost surely, 2^79717398844 is an apocalyptic number.

It is an amenable number.

79717398844 is a deficient number, since it is larger than the sum of its proper divisors (62075024124).

79717398844 is a wasteful number, since it uses less digits than its factorization.

79717398844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326710716 (or 326710714 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 67.

The spelling of 79717398844 in words is "seventy-nine billion, seven hundred seventeen million, three hundred ninety-eight thousand, eight hundred forty-four".