204243554244 has 48 divisors (see below), whose sum is σ = 486891518400. Its totient is φ = 66622212096.

The previous prime is 204243554237. The next prime is 204243554293. The reversal of 204243554244 is 442455342402.

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 15 ways as a sum of consecutive naturals, for example, 882174 + ... + 1089365.

It is an arithmetic number, because the mean of its divisors is an integer number (10143573300).

Almost surely, 2^204243554244 is an apocalyptic number.

It is an amenable number.

204243554244 is an abundant number, since it is smaller than the sum of its proper divisors (282647964156).

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

204243554244 is a wasteful number, since it uses less digits than its factorization.

204243554244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971732 (or 1971730 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 39.

Adding to 204243554244 its reverse (442455342402), we get a palindrome (646698896646).

The spelling of 204243554244 in words is "two hundred four billion, two hundred forty-three million, five hundred fifty-four thousand, two hundred forty-four".