6809346547609 has 2 divisors, whose sum is σ = 6809346547610. Its totient is φ = 6809346547608.

The previous prime is 6809346547579. The next prime is 6809346547687. The reversal of 6809346547609 is 9067456439086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6476795952025 + 332550595584 = 2544955^2 + 576672^2 .

It is a cyclic number.

It is not a de Polignac number, because 6809346547609 - 2⁷ = 6809346547481 is a prime.

It is not a weakly prime, because it can be changed into another prime (6809346547109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3404673273804 + 3404673273805.

It is an arithmetic number, because the mean of its divisors is an integer number (3404673273805).

Almost surely, 2^{6809346547609} is an apocalyptic number.

It is an amenable number.

6809346547609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6809346547609 is an equidigital number, since it uses as much as digits as its factorization.

6809346547609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 67.

The spelling of 6809346547609 in words is "six trillion, eight hundred nine billion, three hundred forty-six million, five hundred forty-seven thousand, six hundred nine".