6643310056 has 32 divisors (see below), whose sum is σ = 12624768000. Its totient is φ = 3276999936.

The previous prime is 6643310029. The next prime is 6643310059. The reversal of 6643310056 is 6500133466.

It is not an unprimeable number, because it can be changed into a prime (6643310059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163600 + ... + 200128.

It is an arithmetic number, because the mean of its divisors is an integer number (394524000).

Almost surely, 2^6643310056 is an apocalyptic number.

It is an amenable number.

6643310056 is a deficient number, since it is larger than the sum of its proper divisors (5981457944).

6643310056 is a wasteful number, since it uses less digits than its factorization.

6643310056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36841 (or 36837 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 6643310056 is about 81506.5031515891. The cubic root of 6643310056 is about 1879.8715447165.

The spelling of 6643310056 in words is "six billion, six hundred forty-three million, three hundred ten thousand, fifty-six".