220784112018 has 270 divisors, whose sum is σ = 548944937541. Its totient is φ = 66312382752.

The previous prime is 220784111929. The next prime is 220784112041. The reversal of 220784112018 is 810211487022.

It is a happy number.

220784112018 is a `hidden beast` number, since 2 + 207 + 8 + 411 + 20 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 220652849169 + 131262849 = 469737^2 + 11457^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332253.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 3295285221 + ... + 3295285287.

Almost surely, 2^220784112018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220784112018

220784112018 is an abundant number, since it is smaller than the sum of its proper divisors (328160825523).

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

220784112018 is an equidigital number, since it uses as much as digits as its factorization.

220784112018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 220784112018 in words is "two hundred twenty billion, seven hundred eighty-four million, one hundred twelve thousand, eighteen".