8489756656464 has 20 divisors (see below), whose sum is σ = 21931871362656. Its totient is φ = 2829918885472.

The previous prime is 8489756656429. The next prime is 8489756656487. The reversal of 8489756656464 is 4646566579848.

It is a self number, because there is not a number n which added to its sum of digits gives 8489756656464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88434965124 + ... + 88434965219.

Almost surely, 2^{8489756656464} is an apocalyptic number.

It is an amenable number.

8489756656464 is an abundant number, since it is smaller than the sum of its proper divisors (13442114706192).

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

8489756656464 is a wasteful number, since it uses less digits than its factorization.

8489756656464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176869930354 (or 176869930348 counting only the distinct ones).

The product of its digits is 8360755200, while the sum is 78.

The spelling of 8489756656464 in words is "eight trillion, four hundred eighty-nine billion, seven hundred fifty-six million, six hundred fifty-six thousand, four hundred sixty-four".