180856520418 has 32 divisors (see below), whose sum is σ = 417479276160. Its totient is φ = 51161673600.

The previous prime is 180856520357. The next prime is 180856520423. The reversal of 180856520418 is 814025658081.

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, 21313123 + ... + 21321606.

It is an arithmetic number, because the mean of its divisors is an integer number (13046227380).

Almost surely, 2^180856520418 is an apocalyptic number.

180856520418 is an abundant number, since it is smaller than the sum of its proper divisors (236622755742).

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

180856520418 is a wasteful number, since it uses less digits than its factorization.

180856520418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42634842.

The product of its (nonzero) digits is 614400, while the sum is 48.

The spelling of 180856520418 in words is "one hundred eighty billion, eight hundred fifty-six million, five hundred twenty thousand, four hundred eighteen".