204243215112 has 48 divisors (see below), whose sum is σ = 566650391580. Its totient is φ = 66420556800.

The previous prime is 204243215063. The next prime is 204243215129. The reversal of 204243215112 is 211512342402.

204243215112 is a `hidden beast` number, since 20 + 424 + 3 + 215 + 1 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 188395930116 + 15847284996 = 434046^2 + 125886^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34591089 + ... + 34596992.

Almost surely, 2^204243215112 is an apocalyptic number.

It is an amenable number.

204243215112 is an abundant number, since it is smaller than the sum of its proper divisors (362407176468).

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

204243215112 is a wasteful number, since it uses less digits than its factorization.

204243215112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69188134 (or 69188127 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 204243215112 its reverse (211512342402), we get a palindrome (415755557514).

The spelling of 204243215112 in words is "two hundred four billion, two hundred forty-three million, two hundred fifteen thousand, one hundred twelve".