6718689667799 has 2 divisors, whose sum is σ = 6718689667800. Its totient is φ = 6718689667798.

The previous prime is 6718689667783. The next prime is 6718689667801. The reversal of 6718689667799 is 9977669868176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6718689667799 - 2⁴ = 6718689667783 is a prime.

Together with 6718689667801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6718689667499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3359344833899 + 3359344833900.

It is an arithmetic number, because the mean of its divisors is an integer number (3359344833900).

Almost surely, 2^{6718689667799} is an apocalyptic number.

6718689667799 is a deficient number, since it is larger than the sum of its proper divisors (1).

6718689667799 is an equidigital number, since it uses as much as digits as its factorization.

6718689667799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20739898368, while the sum is 89.

The spelling of 6718689667799 in words is "six trillion, seven hundred eighteen billion, six hundred eighty-nine million, six hundred sixty-seven thousand, seven hundred ninety-nine".