668055522180 has 24 divisors (see below), whose sum is σ = 1870555462272. Its totient is φ = 178148139232.

The previous prime is 668055522163. The next prime is 668055522191. The reversal of 668055522180 is 81225550866.

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 7 ways as a sum of consecutive naturals, for example, 5567129292 + ... + 5567129411.

It is an arithmetic number, because the mean of its divisors is an integer number (77939810928).

Almost surely, 2^668055522180 is an apocalyptic number.

668055522180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

668055522180 is an abundant number, since it is smaller than the sum of its proper divisors (1202499940092).

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

668055522180 is a wasteful number, since it uses less digits than its factorization.

668055522180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134258715 (or 11134258713 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 668055522180 in words is "six hundred sixty-eight billion, fifty-five million, five hundred twenty-two thousand, one hundred eighty".