8643008642944 has 48 divisors (see below), whose sum is σ = 18644877927720. Its totient is φ = 3989080902144.

The previous prime is 8643008642929. The next prime is 8643008642963. The reversal of 8643008642944 is 4492468003468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199752052 + ... + 199795315.

Almost surely, 2^{8643008642944} is an apocalyptic number.

It is an amenable number.

8643008642944 is an abundant number, since it is smaller than the sum of its proper divisors (10001869284776).

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

8643008642944 is a wasteful number, since it uses less digits than its factorization.

8643008642944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399547407 (or 399547382 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 58.

The spelling of 8643008642944 in words is "eight trillion, six hundred forty-three billion, eight million, six hundred forty-two thousand, nine hundred forty-four".