79555699444 has 24 divisors (see below), whose sum is σ = 157823049440. Its totient is φ = 34785487584.

The previous prime is 79555699411. The next prime is 79555699469. The reversal of 79555699444 is 44499655597.

It is a self number, because there is not a number n which added to its sum of digits gives 79555699444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40259994 + ... + 40261969.

Almost surely, 2^79555699444 is an apocalyptic number.

It is an amenable number.

79555699444 is a deficient number, since it is larger than the sum of its proper divisors (78267349996).

79555699444 is a wasteful number, since it uses less digits than its factorization.

79555699444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80521999 (or 80521997 counting only the distinct ones).

The product of its digits is 244944000, while the sum is 67.

The spelling of 79555699444 in words is "seventy-nine billion, five hundred fifty-five million, six hundred ninety-nine thousand, four hundred forty-four".