79442944456 has 16 divisors (see below), whose sum is σ = 151480191600. Its totient is φ = 39048226704.

The previous prime is 79442944429. The next prime is 79442944517. The reversal of 79442944456 is 65444924497.

It is a happy number.

It is a super-2 number, since 2×79442944456² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79442944456.

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, 84155190 + ... + 84156133.

It is an arithmetic number, because the mean of its divisors is an integer number (9467511975).

Almost surely, 2^79442944456 is an apocalyptic number.

It is an amenable number.

79442944456 is a deficient number, since it is larger than the sum of its proper divisors (72037247144).

79442944456 is a wasteful number, since it uses less digits than its factorization.

79442944456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168311388 (or 168311384 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 58.

The spelling of 79442944456 in words is "seventy-nine billion, four hundred forty-two million, nine hundred forty-four thousand, four hundred fifty-six".