6640237763824 has 80 divisors (see below), whose sum is σ = 15730971566080. Its totient is φ = 2651839015680.

The previous prime is 6640237763791. The next prime is 6640237763827. The reversal of 6640237763824 is 4283677320466.

It is a super-2 number, since 2×6640237763824² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640237763827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25447344 + ... + 25706959.

It is an arithmetic number, because the mean of its divisors is an integer number (196637144576).

Almost surely, 2^{6640237763824} is an apocalyptic number.

It is an amenable number.

6640237763824 is an abundant number, since it is smaller than the sum of its proper divisors (9090733802256).

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

6640237763824 is a wasteful number, since it uses less digits than its factorization.

6640237763824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51154398 (or 51154392 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 58.

The spelling of 6640237763824 in words is "six trillion, six hundred forty billion, two hundred thirty-seven million, seven hundred sixty-three thousand, eight hundred twenty-four".