8221944768 has 28 divisors (see below), whose sum is σ = 21753896040. Its totient is φ = 2740648192.

The previous prime is 8221944739. The next prime is 8221944811. The reversal of 8221944768 is 8674491228.

It is a self number, because there is not a number n which added to its sum of digits gives 8221944768.

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, 21411123 + ... + 21411506.

Almost surely, 2^8221944768 is an apocalyptic number.

It is an amenable number.

8221944768 is an abundant number, since it is smaller than the sum of its proper divisors (13531951272).

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

8221944768 is a wasteful number, since it uses less digits than its factorization.

8221944768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42822644 (or 42822634 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 8221944768 is about 90674.9401323210. The cubic root of 8221944768 is about 2018.3269458939.

The spelling of 8221944768 in words is "eight billion, two hundred twenty-one million, nine hundred forty-four thousand, seven hundred sixty-eight".