204366303557 has 16 divisors (see below), whose sum is σ = 231118608000. Its totient is φ = 179294461632.

The previous prime is 204366303521. The next prime is 204366303587. The reversal of 204366303557 is 755303663402.

204366303557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204366303557 - 2¹⁰ = 204366302533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204366303587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2129807 + ... + 2223692.

It is an arithmetic number, because the mean of its divisors is an integer number (14444913000).

Almost surely, 2^204366303557 is an apocalyptic number.

It is an amenable number.

204366303557 is a deficient number, since it is larger than the sum of its proper divisors (26752304443).

204366303557 is a wasteful number, since it uses less digits than its factorization.

204366303557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353692.

The product of its (nonzero) digits is 1360800, while the sum is 44.

Adding to 204366303557 its reverse (755303663402), we get a palindrome (959669966959).

The spelling of 204366303557 in words is "two hundred four billion, three hundred sixty-six million, three hundred three thousand, five hundred fifty-seven".