6709840576849 has 2 divisors, whose sum is σ = 6709840576850. Its totient is φ = 6709840576848.

The previous prime is 6709840576787. The next prime is 6709840576867. The reversal of 6709840576849 is 9486750489076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4250887285824 + 2458953291025 = 2061768^2 + 1568105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6709840576849 is a prime.

It is not a weakly prime, because it can be changed into another prime (6709840576349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3354920288424 + 3354920288425.

It is an arithmetic number, because the mean of its divisors is an integer number (3354920288425).

Almost surely, 2^{6709840576849} is an apocalyptic number.

It is an amenable number.

6709840576849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6709840576849 is an equidigital number, since it uses as much as digits as its factorization.

6709840576849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 731566080, while the sum is 73.

The spelling of 6709840576849 in words is "six trillion, seven hundred nine billion, eight hundred forty million, five hundred seventy-six thousand, eight hundred forty-nine".