180731020020 has 24 divisors (see below), whose sum is σ = 506046856224. Its totient is φ = 48194938656.

The previous prime is 180731020009. The next prime is 180731020061. The reversal of 180731020020 is 20020137081.

180731020020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506091774 + ... + 1506091893.

It is an arithmetic number, because the mean of its divisors is an integer number (21085285676).

Almost surely, 2^180731020020 is an apocalyptic number.

180731020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180731020020 is an abundant number, since it is smaller than the sum of its proper divisors (325315836204).

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

180731020020 is a wasteful number, since it uses less digits than its factorization.

180731020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012183679 (or 3012183677 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The spelling of 180731020020 in words is "one hundred eighty billion, seven hundred thirty-one million, twenty thousand, twenty".