220646843882 has 16 divisors (see below), whose sum is σ = 342751667400. Its totient is φ = 106404480000.

The previous prime is 220646843867. The next prime is 220646843909. The reversal of 220646843882 is 288348646022.

It can be written as a sum of positive squares in 4 ways, for example, as 145253216641 + 75393627241 = 381121^2 + 274579^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1993619 + ... + 2101382.

Almost surely, 2^220646843882 is an apocalyptic number.

220646843882 is a deficient number, since it is larger than the sum of its proper divisors (122104823518).

220646843882 is a wasteful number, since it uses less digits than its factorization.

220646843882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095961.

The product of its (nonzero) digits is 7077888, while the sum is 53.

The spelling of 220646843882 in words is "two hundred twenty billion, six hundred forty-six million, eight hundred forty-three thousand, eight hundred eighty-two".