64640466400060 has 24 divisors (see below), whose sum is σ = 135745603849296. Its totient is φ = 25856067624960.

The previous prime is 64640466400049. The next prime is 64640466400063. The reversal of 64640466400060 is 6000466404646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64640466400063) 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, 2909646 + ... + 11736565.

It is an arithmetic number, because the mean of its divisors is an integer number (5656066827054).

Almost surely, 2^{64640466400060} is an apocalyptic number.

It is an amenable number.

64640466400060 is an abundant number, since it is smaller than the sum of its proper divisors (71105137449236).

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

64640466400060 is a wasteful number, since it uses less digits than its factorization.

64640466400060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866893 (or 14866891 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 64640466400060 in words is "sixty-four trillion, six hundred forty billion, four hundred sixty-six million, four hundred thousand, sixty".