79803990016 has 45 divisors (see below), whose sum is σ = 159675458719. Its totient is φ = 39883915264.

The previous prime is 79803989999. The next prime is 79803990037. The reversal of 79803990016 is 61009930897.

The square root of 79803990016 is 282496.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 36158385 + ... + 36160591.

Almost surely, 2^79803990016 is an apocalyptic number.

79803990016 is the 282496-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79803990016

79803990016 is an abundant number, since it is smaller than the sum of its proper divisors (79871468703).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79803990016 is an frugal number, since it uses more digits than its factorization.

79803990016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 79803990016 in words is "seventy-nine billion, eight hundred three million, nine hundred ninety thousand, sixteen".