204204424055 has 4 divisors (see below), whose sum is σ = 245045308872. Its totient is φ = 163363539240.

The previous prime is 204204424009. The next prime is 204204424063. The reversal of 204204424055 is 550424402402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 204204424055 - 2⁸ = 204204423799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20420442401 + ... + 20420442410.

It is an arithmetic number, because the mean of its divisors is an integer number (61261327218).

Almost surely, 2^204204424055 is an apocalyptic number.

204204424055 is a deficient number, since it is larger than the sum of its proper divisors (40840884817).

204204424055 is an equidigital number, since it uses as much as digits as its factorization.

204204424055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40840884816.

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 204204424055 its reverse (550424402402), we get a palindrome (754628826457).

The spelling of 204204424055 in words is "two hundred four billion, two hundred four million, four hundred twenty-four thousand, fifty-five".