180537289728 has 88 divisors (see below), whose sum is σ = 481367443440. Its totient is φ = 60157870080.

The previous prime is 180537289657. The next prime is 180537289847. The reversal of 180537289728 is 827982735081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10402338 + ... + 10419678.

Almost surely, 2^180537289728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180537289728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240683721720).

180537289728 is an abundant number, since it is smaller than the sum of its proper divisors (300830153712).

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

180537289728 is a wasteful number, since it uses less digits than its factorization.

180537289728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20753 (or 20735 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 180537289728 in words is "one hundred eighty billion, five hundred thirty-seven million, two hundred eighty-nine thousand, seven hundred twenty-eight".