204420044420 has 24 divisors (see below), whose sum is σ = 429433741464. Its totient is φ = 81739132416.

The previous prime is 204420044417. The next prime is 204420044447. The reversal of 204420044420 is 24440024402.

It can be written as a sum of positive squares in 4 ways, for example, as 103388224 + 204316656196 = 10168^2 + 452014^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204420044420.

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 7 ways as a sum of consecutive naturals, for example, 1747259 + ... + 1860578.

It is an arithmetic number, because the mean of its divisors is an integer number (17893072561).

Almost surely, 2^204420044420 is an apocalyptic number.

204420044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204420044420 is an abundant number, since it is smaller than the sum of its proper divisors (225013697044).

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

204420044420 is a wasteful number, since it uses less digits than its factorization.

204420044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610679 (or 3610677 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 204420044420 its reverse (24440024402), we get a palindrome (228860068822).

The spelling of 204420044420 in words is "two hundred four billion, four hundred twenty million, forty-four thousand, four hundred twenty".