6433265664 has 432 divisors, whose sum is σ = 22940026200. Its totient is φ = 1725825024.

The previous prime is 6433265639. The next prime is 6433265677. The reversal of 6433265664 is 4665623346.

6433265664 is a `hidden beast` number, since 64 + 3 + 3 + 26 + 566 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15353647 + ... + 15354065.

Almost surely, 2^6433265664 is an apocalyptic number.

6433265664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6433265664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11470013100).

6433265664 is an abundant number, since it is smaller than the sum of its proper divisors (16506760536).

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

6433265664 is a wasteful number, since it uses less digits than its factorization.

6433265664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 448 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 45.

The square root of 6433265664 is about 80207.6409327690. The cubic root of 6433265664 is about 1859.8467581000.

The spelling of 6433265664 in words is "six billion, four hundred thirty-three million, two hundred sixty-five thousand, six hundred sixty-four".