6393682556664 has 128 divisors (see below), whose sum is σ = 17243560212480. Its totient is φ = 1963883520000.

The previous prime is 6393682556633. The next prime is 6393682556711. The reversal of 6393682556664 is 4666552863936.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 916390744 + ... + 916397720.

It is an arithmetic number, because the mean of its divisors is an integer number (134715314160).

Almost surely, 2^{6393682556664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6393682556664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8621780106240).

6393682556664 is an abundant number, since it is smaller than the sum of its proper divisors (10849877655816).

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

6393682556664 is a wasteful number, since it uses less digits than its factorization.

6393682556664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11661 (or 11657 counting only the distinct ones).

The product of its digits is 1007769600, while the sum is 69.

The spelling of 6393682556664 in words is "six trillion, three hundred ninety-three billion, six hundred eighty-two million, five hundred fifty-six thousand, six hundred sixty-four".