204204424057 has 4 divisors (see below), whose sum is σ = 204963548580. Its totient is φ = 203445299536.

The previous prime is 204204424009. The next prime is 204204424063. The reversal of 204204424057 is 750424402402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45498596416 + 158705827641 = 213304^2 + 398379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204204424057 is a prime.

It is a super-3 number, since 3×204204424057³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204204424657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379561858 + ... + 379562395.

It is an arithmetic number, because the mean of its divisors is an integer number (51240887145).

Almost surely, 2^204204424057 is an apocalyptic number.

It is an amenable number.

204204424057 is a deficient number, since it is larger than the sum of its proper divisors (759124523).

204204424057 is an equidigital number, since it uses as much as digits as its factorization.

204204424057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759124522.

The product of its (nonzero) digits is 71680, while the sum is 34.

Adding to 204204424057 its reverse (750424402402), we get a palindrome (954628826459).

The spelling of 204204424057 in words is "two hundred four billion, two hundred four million, four hundred twenty-four thousand, fifty-seven".