204220570418 has 6 divisors (see below), whose sum is σ = 306331814271. Its totient is φ = 102109965662.

The previous prime is 204220570417. The next prime is 204220570423. The reversal of 204220570418 is 814075022402.

It can be written as a sum of positive squares in only one way, i.e., 102110285209 + 102110285209 = 319547^2 + 319547^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=319547.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204220570417) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 479321 + ... + 798867.

Almost surely, 2^204220570418 is an apocalyptic number.

204220570418 is a deficient number, since it is larger than the sum of its proper divisors (102111243853).

204220570418 is an frugal number, since it uses more digits than its factorization.

204220570418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639096 (or 319549 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The spelling of 204220570418 in words is "two hundred four billion, two hundred twenty million, five hundred seventy thousand, four hundred eighteen".