8821972168 has 32 divisors (see below), whose sum is σ = 16834586400. Its totient is φ = 4332865408.

The previous prime is 8821972153. The next prime is 8821972189. The reversal of 8821972168 is 8612791288.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669855 + ... + 682897.

It is an arithmetic number, because the mean of its divisors is an integer number (526080825).

Almost surely, 2^8821972168 is an apocalyptic number.

It is an amenable number.

8821972168 is a deficient number, since it is larger than the sum of its proper divisors (8012614232).

8821972168 is a wasteful number, since it uses less digits than its factorization.

8821972168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14541 (or 14537 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The square root of 8821972168 is about 93925.3542340938. The cubic root of 8821972168 is about 2066.2770931082.

The spelling of 8821972168 in words is "eight billion, eight hundred twenty-one million, nine hundred seventy-two thousand, one hundred sixty-eight".