180638160066 has 48 divisors (see below), whose sum is σ = 481701764544. Its totient is φ = 47640832992.

The previous prime is 180638160041. The next prime is 180638160067. The reversal of 180638160066 is 660061836081.

180638160066 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 38 + 1 + 600 + 6 + 6 = 666.

180638160066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (180638160067) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 55138216 + ... + 55141491.

It is an arithmetic number, because the mean of its divisors is an integer number (10035453428).

Almost surely, 2^180638160066 is an apocalyptic number.

180638160066 is an abundant number, since it is smaller than the sum of its proper divisors (301063604478).

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

180638160066 is a wasteful number, since it uses less digits than its factorization.

180638160066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110279735 (or 110279732 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 180638160066 in words is "one hundred eighty billion, six hundred thirty-eight million, one hundred sixty thousand, sixty-six".