180821376049212 has 72 divisors (see below), whose sum is σ = 466880387291136. Its totient is φ = 58981374195744.

The previous prime is 180821376049183. The next prime is 180821376049229. The reversal of 180821376049212 is 212940673128081.

180821376049212 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 2 + 1 + 3 + 7 + 604 + 9 + 21 + 2 = 666.

It is a super-2 number, since 2×180821376049212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 935833 + ... + 19039919.

It is an arithmetic number, because the mean of its divisors is an integer number (6484449823488).

Almost surely, 2^{180821376049212} is an apocalyptic number.

180821376049212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180821376049212 is an abundant number, since it is smaller than the sum of its proper divisors (286059011241924).

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

180821376049212 is a wasteful number, since it uses less digits than its factorization.

180821376049212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18110047 (or 18110042 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 180821376049212 in words is "one hundred eighty trillion, eight hundred twenty-one billion, three hundred seventy-six million, forty-nine thousand, two hundred twelve".