13081256597 has 2 divisors, whose sum is σ = 13081256598. Its totient is φ = 13081256596.

The previous prime is 13081256563. The next prime is 13081256603. The reversal of 13081256597 is 79565218031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11141646916 + 1939609681 = 105554^2 + 44041^2 .

It is a cyclic number.

It is not a de Polignac number, because 13081256597 - 2¹⁰ = 13081255573 is a prime.

It is a super-2 number, since 2×13081256597² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13081256197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540628298 + 6540628299.

It is an arithmetic number, because the mean of its divisors is an integer number (6540628299).

Almost surely, 2^13081256597 is an apocalyptic number.

It is an amenable number.

13081256597 is a deficient number, since it is larger than the sum of its proper divisors (1).

13081256597 is an equidigital number, since it uses as much as digits as its factorization.

13081256597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 13081256597 in words is "thirteen billion, eighty-one million, two hundred fifty-six thousand, five hundred ninety-seven".