180532320400 has 120 divisors (see below), whose sum is σ = 443262772224. Its totient is φ = 70627737600.

The previous prime is 180532320389. The next prime is 180532320413. The reversal of 180532320400 is 4023235081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40286160 + ... + 40290640.

Almost surely, 2^180532320400 is an apocalyptic number.

180532320400 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 180532320400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221631386112).

180532320400 is an abundant number, since it is smaller than the sum of its proper divisors (262730451824).

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

180532320400 is a wasteful number, since it uses less digits than its factorization.

180532320400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6689 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 180532320400 its reverse (4023235081), we get a palindrome (184555555481).

The spelling of 180532320400 in words is "one hundred eighty billion, five hundred thirty-two million, three hundred twenty thousand, four hundred".