6851788756349 has 2 divisors, whose sum is σ = 6851788756350. Its totient is φ = 6851788756348.

The previous prime is 6851788756303. The next prime is 6851788756363. The reversal of 6851788756349 is 9436578871586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6649657588249 + 202131168100 = 2578693^2 + 449590^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851788756349 - 2²⁴ = 6851771979133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6851788756349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6851788756399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3425894378174 + 3425894378175.

It is an arithmetic number, because the mean of its divisors is an integer number (3425894378175).

Almost surely, 2^{6851788756349} is an apocalyptic number.

It is an amenable number.

6851788756349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6851788756349 is an equidigital number, since it uses as much as digits as its factorization.

6851788756349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2438553600, while the sum is 77.

The spelling of 6851788756349 in words is "six trillion, eight hundred fifty-one billion, seven hundred eighty-eight million, seven hundred fifty-six thousand, three hundred forty-nine".