180021602181804 has 48 divisors (see below), whose sum is σ = 428990131315200. Its totient is φ = 58730111764416.

The previous prime is 180021602181739. The next prime is 180021602181821. The reversal of 180021602181804 is 408181206120081.

180021602181804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107944962 + ... + 109599990.

It is an arithmetic number, because the mean of its divisors is an integer number (8937294402400).

Almost surely, 2^{180021602181804} is an apocalyptic number.

It is an amenable number.

180021602181804 is an abundant number, since it is smaller than the sum of its proper divisors (248968529133396).

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

180021602181804 is a wasteful number, since it uses less digits than its factorization.

180021602181804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847942 (or 1847940 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The spelling of 180021602181804 in words is "one hundred eighty trillion, twenty-one billion, six hundred two million, one hundred eighty-one thousand, eight hundred four".