505203501363263 has 2 divisors, whose sum is σ = 505203501363264. Its totient is φ = 505203501363262.

The previous prime is 505203501363257. The next prime is 505203501363287. The reversal of 505203501363263 is 362363105302505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505203501363263 - 2¹⁴ = 505203501346879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505203501363203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252601750681631 + 252601750681632.

It is an arithmetic number, because the mean of its divisors is an integer number (252601750681632).

Almost surely, 2^{505203501363263} is an apocalyptic number.

505203501363263 is a deficient number, since it is larger than the sum of its proper divisors (1).

505203501363263 is an equidigital number, since it uses as much as digits as its factorization.

505203501363263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 44.

Adding to 505203501363263 its reverse (362363105302505), we get a palindrome (867566606665768).

The spelling of 505203501363263 in words is "five hundred five trillion, two hundred three billion, five hundred one million, three hundred sixty-three thousand, two hundred sixty-three".