6698966556829 has 2 divisors, whose sum is σ = 6698966556830. Its totient is φ = 6698966556828.

The previous prime is 6698966556809. The next prime is 6698966556929. The reversal of 6698966556829 is 9286556698966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6661163531929 + 37803024900 = 2580923^2 + 194430^2 .

It is a cyclic number.

It is not a de Polignac number, because 6698966556829 - 2⁵ = 6698966556797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6698966556809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349483278414 + 3349483278415.

It is an arithmetic number, because the mean of its divisors is an integer number (3349483278415).

Almost surely, 2^{6698966556829} is an apocalyptic number.

It is an amenable number.

6698966556829 is a deficient number, since it is larger than the sum of its proper divisors (1).

6698966556829 is an equidigital number, since it uses as much as digits as its factorization.

6698966556829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18139852800, while the sum is 85.

The spelling of 6698966556829 in words is "six trillion, six hundred ninety-eight billion, nine hundred sixty-six million, five hundred fifty-six thousand, eight hundred twenty-nine".