66755285108 has 12 divisors (see below), whose sum is σ = 117065639040. Its totient is φ = 33307959672.

The previous prime is 66755285063. The next prime is 66755285119. The reversal of 66755285108 is 80158255766.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66755285108.

It is a congruent number.

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, 17418566 + ... + 17422397.

It is an arithmetic number, because the mean of its divisors is an integer number (9755469920).

Almost surely, 2^66755285108 is an apocalyptic number.

It is an amenable number.

66755285108 is a deficient number, since it is larger than the sum of its proper divisors (50310353932).

66755285108 is a wasteful number, since it uses less digits than its factorization.

66755285108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34841446 (or 34841444 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 66755285108 in words is "sixty-six billion, seven hundred fifty-five million, two hundred eighty-five thousand, one hundred eight".