66384318904704 has 64 divisors (see below), whose sum is σ = 195925941222000. Its totient is φ = 22128106300416.

The previous prime is 66384318904663. The next prime is 66384318904763. The reversal of 66384318904704 is 40740981348366.

It is a happy number.

66384318904704 is a `hidden beast` number, since 6 + 6 + 3 + 84 + 3 + 1 + 89 + 0 + 470 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

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, 9604209349 + ... + 9604216260.

Almost surely, 2^{66384318904704} is an apocalyptic number.

66384318904704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66384318904704 is an abundant number, since it is smaller than the sum of its proper divisors (129541622317296).

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

66384318904704 is a wasteful number, since it uses less digits than its factorization.

66384318904704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19208425632 (or 19208425614 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 63.

The spelling of 66384318904704 in words is "sixty-six trillion, three hundred eighty-four billion, three hundred eighteen million, nine hundred four thousand, seven hundred four".