64407012800 has 84 divisors (see below), whose sum is σ = 170672446056. Its totient is φ = 23781043200.

The previous prime is 64407012779. The next prime is 64407012811. The reversal of 64407012800 is 821070446.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1527446 + ... + 1569045.

It is an arithmetic number, because the mean of its divisors is an integer number (2031814834).

Almost surely, 2^64407012800 is an apocalyptic number.

It is an amenable number.

64407012800 is an abundant number, since it is smaller than the sum of its proper divisors (106265433256).

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

64407012800 is a wasteful number, since it uses less digits than its factorization.

64407012800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096526 (or 3096511 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 64407012800 in words is "sixty-four billion, four hundred seven million, twelve thousand, eight hundred".