13256742593 has 2 divisors, whose sum is σ = 13256742594. Its totient is φ = 13256742592.

The previous prime is 13256742563. The next prime is 13256742619. The reversal of 13256742593 is 39524765231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13145081104 + 111661489 = 114652^2 + 10567^2 .

It is a cyclic number.

It is not a de Polignac number, because 13256742593 - 2⁸ = 13256742337 is a prime.

It is not a weakly prime, because it can be changed into another prime (13256742533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628371296 + 6628371297.

It is an arithmetic number, because the mean of its divisors is an integer number (6628371297).

Almost surely, 2^13256742593 is an apocalyptic number.

It is an amenable number.

13256742593 is a deficient number, since it is larger than the sum of its proper divisors (1).

13256742593 is an equidigital number, since it uses as much as digits as its factorization.

13256742593 is an evil number, because the sum of its binary digits is even.

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

The spelling of 13256742593 in words is "thirteen billion, two hundred fifty-six million, seven hundred forty-two thousand, five hundred ninety-three".