220518502218 has 128 divisors (see below), whose sum is σ = 584633548800. Its totient is φ = 60241522176.

The previous prime is 220518502213. The next prime is 220518502229. The reversal of 220518502218 is 812205815022.

It is not an unprimeable number, because it can be changed into a prime (220518502213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35894455 + ... + 35900597.

It is an arithmetic number, because the mean of its divisors is an integer number (4567449600).

Almost surely, 2^220518502218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220518502218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292316774400).

220518502218 is an abundant number, since it is smaller than the sum of its proper divisors (364115046582).

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

220518502218 is a wasteful number, since it uses less digits than its factorization.

220518502218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313 (or 10307 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The spelling of 220518502218 in words is "two hundred twenty billion, five hundred eighteen million, five hundred two thousand, two hundred eighteen".