202012020180 has 144 divisors (see below), whose sum is σ = 633405427200. Its totient is φ = 52060527360.

The previous prime is 202012020179. The next prime is 202012020227. The reversal of 202012020180 is 81020210202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4099126 + ... + 4148114.

It is an arithmetic number, because the mean of its divisors is an integer number (4398648800).

Almost surely, 2^202012020180 is an apocalyptic number.

202012020180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202012020180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316702713600).

202012020180 is an abundant number, since it is smaller than the sum of its proper divisors (431393407020).

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

202012020180 is a wasteful number, since it uses less digits than its factorization.

202012020180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49774 (or 49769 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202012020180 its reverse (81020210202), we get a palindrome (283032230382).

The spelling of 202012020180 in words is "two hundred two billion, twelve million, twenty thousand, one hundred eighty".