6778242113 has 2 divisors, whose sum is σ = 6778242114. Its totient is φ = 6778242112.

The previous prime is 6778242049. The next prime is 6778242127. The reversal of 6778242113 is 3112428776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5774176144 + 1004065969 = 75988^2 + 31687^2 .

It is a cyclic number.

It is not a de Polignac number, because 6778242113 - 2⁶ = 6778242049 is a prime.

It is a super-3 number, since 3×6778242113³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (6778244113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389121056 + 3389121057.

It is an arithmetic number, because the mean of its divisors is an integer number (3389121057).

Almost surely, 2^6778242113 is an apocalyptic number.

It is an amenable number.

6778242113 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778242113 is an equidigital number, since it uses as much as digits as its factorization.

6778242113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 6778242113 is about 82330.0802441003. The cubic root of 6778242113 is about 1892.5136727169.

The spelling of 6778242113 in words is "six billion, seven hundred seventy-eight million, two hundred forty-two thousand, one hundred thirteen".