66004626204 has 36 divisors (see below), whose sum is σ = 182012758200. Its totient is φ = 20001401760.

The previous prime is 66004626179. The next prime is 66004626217. The reversal of 66004626204 is 40262640066.

66004626204 is a `hidden beast` number, since 6 + 6 + 0 + 0 + 4 + 626 + 20 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×66004626204² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 83338779 + ... + 83339570.

It is an arithmetic number, because the mean of its divisors is an integer number (5055909950).

Almost surely, 2^66004626204 is an apocalyptic number.

It is an amenable number.

66004626204 is an abundant number, since it is smaller than the sum of its proper divisors (116008131996).

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

66004626204 is a wasteful number, since it uses less digits than its factorization.

66004626204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166678370 (or 166678365 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 66004626204 in words is "sixty-six billion, four million, six hundred twenty-six thousand, two hundred four".