204244442393 has 2 divisors, whose sum is σ = 204244442394. Its totient is φ = 204244442392.

The previous prime is 204244442317. The next prime is 204244442417. The reversal of 204244442393 is 393244442402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188835440704 + 15409001689 = 434552^2 + 124133^2 .

It is a cyclic number.

It is not a de Polignac number, because 204244442393 - 2¹⁸ = 204244180249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204244442393.

It is not a weakly prime, because it can be changed into another prime (204244442993) by changing a digit.

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 as a sum of consecutive naturals, namely, 102122221196 + 102122221197.

It is an arithmetic number, because the mean of its divisors is an integer number (102122221197).

Almost surely, 2^204244442393 is an apocalyptic number.

It is an amenable number.

204244442393 is a deficient number, since it is larger than the sum of its proper divisors (1).

204244442393 is an equidigital number, since it uses as much as digits as its factorization.

204244442393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 41.

Adding to 204244442393 its reverse (393244442402), we get a palindrome (597488884795).

The spelling of 204244442393 in words is "two hundred four billion, two hundred forty-four million, four hundred forty-two thousand, three hundred ninety-three".