64004200056 has 64 divisors (see below), whose sum is σ = 180443059200. Its totient is φ = 21016299744.

The previous prime is 64004200027. The next prime is 64004200087. The reversal of 64004200056 is 65000240046.

It is a happy number.

64004200056 is a `hidden beast` number, since 6 + 400 + 4 + 200 + 0 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2196840 + ... + 2225783.

It is an arithmetic number, because the mean of its divisors is an integer number (2819422800).

Almost surely, 2^64004200056 is an apocalyptic number.

It is an amenable number.

64004200056 is an abundant number, since it is smaller than the sum of its proper divisors (116438859144).

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

64004200056 is a wasteful number, since it uses less digits than its factorization.

64004200056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422705 (or 4422695 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 64004200056 in words is "sixty-four billion, four million, two hundred thousand, fifty-six".