180121357391202 has 48 divisors (see below), whose sum is σ = 395611148769408. Its totient is φ = 59217660169920.

The previous prime is 180121357391201. The next prime is 180121357391303. The reversal of 180121357391202 is 202193753121081.

180121357391202 is a `hidden beast` number, since 1 + 8 + 0 + 1 + 2 + 1 + 3 + 57 + 391 + 202 = 666.

180121357391202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (180121357391201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461059483 + ... + 461449985.

It is an arithmetic number, because the mean of its divisors is an integer number (8241898932696).

Almost surely, 2^{180121357391202} is an apocalyptic number.

180121357391202 is an abundant number, since it is smaller than the sum of its proper divisors (215489791378206).

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

180121357391202 is a wasteful number, since it uses less digits than its factorization.

180121357391202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741615 (or 741612 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 180121357391202 in words is "one hundred eighty trillion, one hundred twenty-one billion, three hundred fifty-seven million, three hundred ninety-one thousand, two hundred two".