8221776016 has 10 divisors (see below), whose sum is σ = 15929691062. Its totient is φ = 4110888000.

The previous prime is 8221776001. The next prime is 8221776089. The reversal of 8221776016 is 6106771228.

It can be written as a sum of positive squares in only one way, i.e., 8168544400 + 53231616 = 90380^2 + 7296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8221776016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256930485 + ... + 256930516.

Almost surely, 2^8221776016 is an apocalyptic number.

It is an amenable number.

8221776016 is a deficient number, since it is larger than the sum of its proper divisors (7707915046).

8221776016 is a wasteful number, since it uses less digits than its factorization.

8221776016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513861009 (or 513861003 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 8221776016 is about 90674.0095948117. The cubic root of 8221776016 is about 2018.3131373588.

The spelling of 8221776016 in words is "eight billion, two hundred twenty-one million, seven hundred seventy-six thousand, sixteen".