1263365127263 has 2 divisors, whose sum is σ = 1263365127264. Its totient is φ = 1263365127262.

The previous prime is 1263365127253. The next prime is 1263365127287. The reversal of 1263365127263 is 3627215633621.

It is a weak prime.

It is an emirp because it is prime and its reverse (3627215633621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263365127263 - 2³⁸ = 988487220319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263365127253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631682563631 + 631682563632.

It is an arithmetic number, because the mean of its divisors is an integer number (631682563632).

Almost surely, 2^{1263365127263} is an apocalyptic number.

1263365127263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263365127263 is an equidigital number, since it uses as much as digits as its factorization.

1263365127263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 47.

The spelling of 1263365127263 in words is "one trillion, two hundred sixty-three billion, three hundred sixty-five million, one hundred twenty-seven thousand, two hundred sixty-three".