1315475043791 has 2 divisors, whose sum is σ = 1315475043792. Its totient is φ = 1315475043790.

The previous prime is 1315475043731. The next prime is 1315475043811. The reversal of 1315475043791 is 1973405745131.

It is a strong prime.

It is an emirp because it is prime and its reverse (1973405745131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315475043791 - 2¹⁰ = 1315475042767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315475043731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657737521895 + 657737521896.

It is an arithmetic number, because the mean of its divisors is an integer number (657737521896).

Almost surely, 2^{1315475043791} is an apocalyptic number.

1315475043791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315475043791 is an equidigital number, since it uses as much as digits as its factorization.

1315475043791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 1315475043791 in words is "one trillion, three hundred fifteen billion, four hundred seventy-five million, forty-three thousand, seven hundred ninety-one".