663363204349 has 2 divisors, whose sum is σ = 663363204350. Its totient is φ = 663363204348.

The previous prime is 663363204341. The next prime is 663363204353. The reversal of 663363204349 is 943402363366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523659191449 + 139704012900 = 723643^2 + 373770^2 .

It is a cyclic number.

It is not a de Polignac number, because 663363204349 - 2³ = 663363204341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663363204341) 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, 331681602174 + 331681602175.

It is an arithmetic number, because the mean of its divisors is an integer number (331681602175).

Almost surely, 2^663363204349 is an apocalyptic number.

It is an amenable number.

663363204349 is a deficient number, since it is larger than the sum of its proper divisors (1).

663363204349 is an equidigital number, since it uses as much as digits as its factorization.

663363204349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 49.

The spelling of 663363204349 in words is "six hundred sixty-three billion, three hundred sixty-three million, two hundred four thousand, three hundred forty-nine".