204404044420 has 24 divisors (see below), whose sum is σ = 433498482648. Its totient is φ = 80952096000.

The previous prime is 204404044373. The next prime is 204404044451. The reversal of 204404044420 is 24440404402.

It can be written as a sum of positive squares in 4 ways, for example, as 71626887424 + 132777156996 = 267632^2 + 364386^2 .

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, 50593041 + ... + 50597080.

It is an arithmetic number, because the mean of its divisors is an integer number (18062436777).

Almost surely, 2^204404044420 is an apocalyptic number.

204404044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204404044420 is an abundant number, since it is smaller than the sum of its proper divisors (229094438228).

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

204404044420 is a wasteful number, since it uses less digits than its factorization.

204404044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101190231 (or 101190229 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 204404044420 its reverse (24440404402), we get a palindrome (228844448822).

The spelling of 204404044420 in words is "two hundred four billion, four hundred four million, forty-four thousand, four hundred twenty".