204344104420 has 24 divisors (see below), whose sum is σ = 437219274744. Its totient is φ = 80195421696.

The previous prime is 204344104379. The next prime is 204344104453. The reversal of 204344104420 is 24401443402.

It can be written as a sum of positive squares in 4 ways, for example, as 21905776036 + 182438328384 = 148006^2 + 427128^2 .

It is a super-2 number, since 2×204344104420² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 96387669 + ... + 96389788.

It is an arithmetic number, because the mean of its divisors is an integer number (18217469781).

Almost surely, 2^204344104420 is an apocalyptic number.

204344104420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204344104420 is an abundant number, since it is smaller than the sum of its proper divisors (232875170324).

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

204344104420 is a wasteful number, since it uses less digits than its factorization.

204344104420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192777519 (or 192777517 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 204344104420 its reverse (24401443402), we get a palindrome (228745547822).

The spelling of 204344104420 in words is "two hundred four billion, three hundred forty-four million, one hundred four thousand, four hundred twenty".