204444244240 has 20 divisors (see below), whose sum is σ = 475332868044. Its totient is φ = 81777697664.

The previous prime is 204444244223. The next prime is 204444244253. The reversal of 204444244240 is 42442444402.

204444244240 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23196508416 + 181247735824 = 152304^2 + 425732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 204444244196 and 204444244205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277776447 + ... + 1277776606.

Almost surely, 2^204444244240 is an apocalyptic number.

204444244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204444244240 is an abundant number, since it is smaller than the sum of its proper divisors (270888623804).

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

204444244240 is a wasteful number, since it uses less digits than its factorization.

204444244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555553066 (or 2555553060 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 204444244240 its reverse (42442444402), we get a palindrome (246886688642).

The spelling of 204444244240 in words is "two hundred four billion, four hundred forty-four million, two hundred forty-four thousand, two hundred forty".