180558949506 has 16 divisors (see below), whose sum is σ = 388896199104. Its totient is φ = 55556599824.

The previous prime is 180558949499. The next prime is 180558949511. The reversal of 180558949506 is 605949855081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180558949506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157429086 + ... + 1157429241.

It is an arithmetic number, because the mean of its divisors is an integer number (24306012444).

Almost surely, 2^180558949506 is an apocalyptic number.

180558949506 is an abundant number, since it is smaller than the sum of its proper divisors (208337249598).

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

180558949506 is a wasteful number, since it uses less digits than its factorization.

180558949506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314858345.

The product of its (nonzero) digits is 15552000, while the sum is 60.

The spelling of 180558949506 in words is "one hundred eighty billion, five hundred fifty-eight million, nine hundred forty-nine thousand, five hundred six".