8516799421824 has 32 divisors (see below), whose sum is σ = 22622748465240. Its totient is φ = 2838933140480.

The previous prime is 8516799421771. The next prime is 8516799421843. The reversal of 8516799421824 is 4281249976158.

It is a tau number, because it is divible by the number of its divisors (32).

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, 11089582197 + ... + 11089582964.

Almost surely, 2^{8516799421824} is an apocalyptic number.

It is an amenable number.

8516799421824 is an abundant number, since it is smaller than the sum of its proper divisors (14105949043416).

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

8516799421824 is a wasteful number, since it uses less digits than its factorization.

8516799421824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22179165178 (or 22179165166 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 8516799421824 in words is "eight trillion, five hundred sixteen billion, seven hundred ninety-nine million, four hundred twenty-one thousand, eight hundred twenty-four".