6464488844646 has 48 divisors (see below), whose sum is σ = 16165793917728. Its totient is φ = 1828709712000.

The previous prime is 6464488844609. The next prime is 6464488844699.

6464488844646 is a `hidden beast` number, since 6 + 4 + 6 + 4 + 4 + 88 + 84 + 464 + 6 = 666.

6464488844646 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253974735 + ... + 254000186.

It is an arithmetic number, because the mean of its divisors is an integer number (336787373286).

Almost surely, 2^{6464488844646} is an apocalyptic number.

6464488844646 is an abundant number, since it is smaller than the sum of its proper divisors (9701305073082).

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

6464488844646 is a wasteful number, since it uses less digits than its factorization.

6464488844646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507975037 (or 507975034 counting only the distinct ones).

The product of its digits is 2717908992, while the sum is 72.

The spelling of 6464488844646 in words is "six trillion, four hundred sixty-four billion, four hundred eighty-eight million, eight hundred forty-four thousand, six hundred forty-six".