666175630884 has 12 divisors (see below), whose sum is σ = 1554409805424. Its totient is φ = 222058543624.

The previous prime is 666175630837. The next prime is 666175630903. The reversal of 666175630884 is 488036571666.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27757317942 + ... + 27757317965.

It is an arithmetic number, because the mean of its divisors is an integer number (129534150452).

Almost surely, 2^666175630884 is an apocalyptic number.

It is an amenable number.

666175630884 is an abundant number, since it is smaller than the sum of its proper divisors (888234174540).

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

666175630884 is a wasteful number, since it uses less digits than its factorization.

666175630884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55514635914 (or 55514635912 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 666175630884 in words is "six hundred sixty-six billion, one hundred seventy-five million, six hundred thirty thousand, eight hundred eighty-four".