8643432896 has 56 divisors (see below), whose sum is σ = 20234428416. Its totient is φ = 3584828160.

The previous prime is 8643432883. The next prime is 8643432901. The reversal of 8643432896 is 6982343468.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent 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, 297296 + ... + 325071.

Almost surely, 2^8643432896 is an apocalyptic number.

It is an amenable number.

8643432896 is an abundant number, since it is smaller than the sum of its proper divisors (11590995520).

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

8643432896 is a wasteful number, since it uses less digits than its factorization.

8643432896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622417 (or 622407 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 53.

The square root of 8643432896 is about 92970.0645154127. The cubic root of 8643432896 is about 2052.2428671371.

The spelling of 8643432896 in words is "eight billion, six hundred forty-three million, four hundred thirty-two thousand, eight hundred ninety-six".