7256442716489 has 2 divisors, whose sum is σ = 7256442716490. Its totient is φ = 7256442716488.

The previous prime is 7256442716461. The next prime is 7256442716513. The reversal of 7256442716489 is 9846172446527.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6958226244025 + 298216472464 = 2637845^2 + 546092^2 .

It is a cyclic number.

It is not a de Polignac number, because 7256442716489 - 2²⁰ = 7256441667913 is a prime.

It is not a weakly prime, because it can be changed into another prime (7256442716449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628221358244 + 3628221358245.

It is an arithmetic number, because the mean of its divisors is an integer number (3628221358245).

Almost surely, 2^{7256442716489} is an apocalyptic number.

It is an amenable number.

7256442716489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256442716489 is an equidigital number, since it uses as much as digits as its factorization.

7256442716489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 65.

The spelling of 7256442716489 in words is "seven trillion, two hundred fifty-six billion, four hundred forty-two million, seven hundred sixteen thousand, four hundred eighty-nine".