8481663972 has 36 divisors (see below), whose sum is σ = 21596268876. Its totient is φ = 2806583040.

The previous prime is 8481663961. The next prime is 8481663991. The reversal of 8481663972 is 2793661848.

8481663972 is a `hidden beast` number, since 8 + 481 + 66 + 39 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5563071396 + 2918592576 = 74586^2 + 54024^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854929 + ... + 864792.

Almost surely, 2^8481663972 is an apocalyptic number.

It is an amenable number.

8481663972 is an abundant number, since it is smaller than the sum of its proper divisors (13114604904).

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

8481663972 is a wasteful number, since it uses less digits than its factorization.

8481663972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719868 (or 1719863 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 8481663972 is about 92095.9498132247. The cubic root of 8481663972 is about 2039.3590171894.

The spelling of 8481663972 in words is "eight billion, four hundred eighty-one million, six hundred sixty-three thousand, nine hundred seventy-two".