26743409569 has 2 divisors, whose sum is σ = 26743409570. Its totient is φ = 26743409568.

The previous prime is 26743409531. The next prime is 26743409591. The reversal of 26743409569 is 96590434762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25242854400 + 1500555169 = 158880^2 + 38737^2 .

It is a cyclic number.

It is not a de Polignac number, because 26743409569 - 2¹¹ = 26743407521 is a prime.

It is a super-2 number, since 2×26743409569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26743409519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13371704784 + 13371704785.

It is an arithmetic number, because the mean of its divisors is an integer number (13371704785).

Almost surely, 2^26743409569 is an apocalyptic number.

It is an amenable number.

26743409569 is a deficient number, since it is larger than the sum of its proper divisors (1).

26743409569 is an equidigital number, since it uses as much as digits as its factorization.

26743409569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 26743409569 in words is "twenty-six billion, seven hundred forty-three million, four hundred nine thousand, five hundred sixty-nine".