6768516929 has 2 divisors, whose sum is σ = 6768516930. Its totient is φ = 6768516928.

The previous prime is 6768516899. The next prime is 6768516949. The reversal of 6768516929 is 9296158676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6154716304 + 613800625 = 78452^2 + 24775^2 .

It is a cyclic number.

It is not a de Polignac number, because 6768516929 - 2⁸ = 6768516673 is a prime.

It is not a weakly prime, because it can be changed into another prime (6768516949) 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, 3384258464 + 3384258465.

It is an arithmetic number, because the mean of its divisors is an integer number (3384258465).

Almost surely, 2^6768516929 is an apocalyptic number.

It is an amenable number.

6768516929 is a deficient number, since it is larger than the sum of its proper divisors (1).

6768516929 is an equidigital number, since it uses as much as digits as its factorization.

6768516929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 59.

The square root of 6768516929 is about 82270.9968883324. The cubic root of 6768516929 is about 1891.6081354252.

The spelling of 6768516929 in words is "six billion, seven hundred sixty-eight million, five hundred sixteen thousand, nine hundred twenty-nine".