1315563944291 has 2 divisors, whose sum is σ = 1315563944292. Its totient is φ = 1315563944290.

The previous prime is 1315563944269. The next prime is 1315563944351. The reversal of 1315563944291 is 1924493655131.

It is a weak prime.

It is an emirp because it is prime and its reverse (1924493655131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315563944291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315563964291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657781972145 + 657781972146.

It is an arithmetic number, because the mean of its divisors is an integer number (657781972146).

Almost surely, 2^{1315563944291} is an apocalyptic number.

1315563944291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315563944291 is an equidigital number, since it uses as much as digits as its factorization.

1315563944291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 53.

The spelling of 1315563944291 in words is "one trillion, three hundred fifteen billion, five hundred sixty-three million, nine hundred forty-four thousand, two hundred ninety-one".