6789071499809 has 2 divisors, whose sum is σ = 6789071499810. Its totient is φ = 6789071499808.

The previous prime is 6789071499797. The next prime is 6789071499841. The reversal of 6789071499809 is 9089941709876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708990989584 + 80080510225 = 2590172^2 + 282985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6789071499809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6789071499809.

It is not a weakly prime, because it can be changed into another prime (6789071499209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394535749904 + 3394535749905.

It is an arithmetic number, because the mean of its divisors is an integer number (3394535749905).

Almost surely, 2^{6789071499809} is an apocalyptic number.

It is an amenable number.

6789071499809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6789071499809 is an equidigital number, since it uses as much as digits as its factorization.

6789071499809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493807104, while the sum is 77.

The spelling of 6789071499809 in words is "six trillion, seven hundred eighty-nine billion, seventy-one million, four hundred ninety-nine thousand, eight hundred nine".