6465556464 has 20 divisors (see below), whose sum is σ = 16702687656. Its totient is φ = 2155185472.

The previous prime is 6465556423. The next prime is 6465556523. The reversal of 6465556464 is 4646555646.

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, 67349499 + ... + 67349594.

Almost surely, 2^6465556464 is an apocalyptic number.

It is an amenable number.

6465556464 is an abundant number, since it is smaller than the sum of its proper divisors (10237131192).

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

6465556464 is a wasteful number, since it uses less digits than its factorization.

6465556464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134699104 (or 134699098 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 51.

The square root of 6465556464 is about 80408.6840086318. The cubic root of 6465556464 is about 1862.9533057193.

The spelling of 6465556464 in words is "six billion, four hundred sixty-five million, five hundred fifty-six thousand, four hundred sixty-four".