180021370968 has 64 divisors (see below), whose sum is σ = 500396544000. Its totient is φ = 59966662176.

The previous prime is 180021370961. The next prime is 180021371017. The reversal of 180021370968 is 869073120081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180021370961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40953 + ... + 601431.

It is an arithmetic number, because the mean of its divisors is an integer number (7818696000).

Almost surely, 2^180021370968 is an apocalyptic number.

180021370968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

180021370968 is an abundant number, since it is smaller than the sum of its proper divisors (320375173032).

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

180021370968 is a wasteful number, since it uses less digits than its factorization.

180021370968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561981 (or 561971 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 180021370968 in words is "one hundred eighty billion, twenty-one million, three hundred seventy thousand, nine hundred sixty-eight".