6782859683209 has 2 divisors, whose sum is σ = 6782859683210. Its totient is φ = 6782859683208.

The previous prime is 6782859683179. The next prime is 6782859683221. The reversal of 6782859683209 is 9023869582876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4855205123209 + 1927654560000 = 2203453^2 + 1388400^2 .

It is a cyclic number.

It is not a de Polignac number, because 6782859683209 - 2¹¹ = 6782859681161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6782859683279) 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, 3391429841604 + 3391429841605.

It is an arithmetic number, because the mean of its divisors is an integer number (3391429841605).

Almost surely, 2^{6782859683209} is an apocalyptic number.

It is an amenable number.

6782859683209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6782859683209 is an equidigital number, since it uses as much as digits as its factorization.

6782859683209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627056640, while the sum is 73.

The spelling of 6782859683209 in words is "six trillion, seven hundred eighty-two billion, eight hundred fifty-nine million, six hundred eighty-three thousand, two hundred nine".