204630020533 has 4 divisors (see below), whose sum is σ = 204641249548. Its totient is φ = 204618791520.

The previous prime is 204630020521. The next prime is 204630020557. The reversal of 204630020533 is 335020036402.

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 1213686244 + 203416334289 = 34838^2 + 451017^2 .

It is a cyclic number.

It is not a de Polignac number, because 204630020533 - 2²⁵ = 204596466101 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 (204630020233) 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, 5587128 + ... + 5623633.

It is an arithmetic number, because the mean of its divisors is an integer number (51160312387).

Almost surely, 2^204630020533 is an apocalyptic number.

It is an amenable number.

204630020533 is a deficient number, since it is larger than the sum of its proper divisors (11229015).

204630020533 is a wasteful number, since it uses less digits than its factorization.

204630020533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229014.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 204630020533 its reverse (335020036402), we get a palindrome (539650056935).

The spelling of 204630020533 in words is "two hundred four billion, six hundred thirty million, twenty thousand, five hundred thirty-three".