263750249513 has 2 divisors, whose sum is σ = 263750249514. Its totient is φ = 263750249512.

The previous prime is 263750249507. The next prime is 263750249527. The reversal of 263750249513 is 315942057362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245116088464 + 18634161049 = 495092^2 + 136507^2 .

It is a cyclic number.

It is not a de Polignac number, because 263750249513 - 2²⁴ = 263733472297 is a prime.

It is not a weakly prime, because it can be changed into another prime (263750249533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131875124756 + 131875124757.

It is an arithmetic number, because the mean of its divisors is an integer number (131875124757).

Almost surely, 2^263750249513 is an apocalyptic number.

It is an amenable number.

263750249513 is a deficient number, since it is larger than the sum of its proper divisors (1).

263750249513 is an equidigital number, since it uses as much as digits as its factorization.

263750249513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 263750249513 in words is "two hundred sixty-three billion, seven hundred fifty million, two hundred forty-nine thousand, five hundred thirteen".