180493957880 has 64 divisors (see below), whose sum is σ = 430415856000. Its totient is φ = 67885000704.

The previous prime is 180493957873. The next prime is 180493957921. The reversal of 180493957880 is 88759394081.

It is a congruent number.

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, 578786 + ... + 834254.

It is an arithmetic number, because the mean of its divisors is an integer number (6725247750).

Almost surely, 2^180493957880 is an apocalyptic number.

180493957880 is a gapful number since it is divisible by the number (10) 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 180493957880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215207928000).

180493957880 is an abundant number, since it is smaller than the sum of its proper divisors (249921898120).

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

180493957880 is a wasteful number, since it uses less digits than its factorization.

180493957880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256536 (or 256532 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 180493957880 in words is "one hundred eighty billion, four hundred ninety-three million, nine hundred fifty-seven thousand, eight hundred eighty".