1311273629563 has 2 divisors, whose sum is σ = 1311273629564. Its totient is φ = 1311273629562.

The previous prime is 1311273629557. The next prime is 1311273629683. The reversal of 1311273629563 is 3659263721131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3659263721131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311273629563 - 2²⁹ = 1310736758651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311273629513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655636814781 + 655636814782.

It is an arithmetic number, because the mean of its divisors is an integer number (655636814782).

Almost surely, 2^{1311273629563} is an apocalyptic number.

1311273629563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311273629563 is an equidigital number, since it uses as much as digits as its factorization.

1311273629563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The spelling of 1311273629563 in words is "one trillion, three hundred eleven billion, two hundred seventy-three million, six hundred twenty-nine thousand, five hundred sixty-three".