220642864208 has 40 divisors (see below), whose sum is σ = 463469685000. Its totient is φ = 101151696384.

The previous prime is 220642864181. The next prime is 220642864223. The reversal of 220642864208 is 802468246022.

It can be written as a sum of positive squares in 4 ways, for example, as 16186963984 + 204455900224 = 127228^2 + 452168^2 .

It is a congruent number.

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, 3528683 + ... + 3590666.

It is an arithmetic number, because the mean of its divisors is an integer number (11586742125).

Almost surely, 2^220642864208 is an apocalyptic number.

It is an amenable number.

220642864208 is an abundant number, since it is smaller than the sum of its proper divisors (242826820792).

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

220642864208 is a wasteful number, since it uses less digits than its factorization.

220642864208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119519 (or 7119513 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 220642864208 in words is "two hundred twenty billion, six hundred forty-two million, eight hundred sixty-four thousand, two hundred eight".