64068200824640 has 56 divisors (see below), whose sum is σ = 152593221449472. Its totient is φ = 25622103513600.

The previous prime is 64068200824627. The next prime is 64068200824757. The reversal of 64068200824640 is 4642800286046.

It is a super-2 number, since 2×64068200824640² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18635144 + ... + 21803783.

Almost surely, 2^{64068200824640} is an apocalyptic number.

It is an amenable number.

64068200824640 is an abundant number, since it is smaller than the sum of its proper divisors (88525020624832).

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

64068200824640 is a wasteful number, since it uses less digits than its factorization.

64068200824640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40443895 (or 40443885 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 50.

The spelling of 64068200824640 in words is "sixty-four trillion, sixty-eight billion, two hundred million, eight hundred twenty-four thousand, six hundred forty".