6816740534137 has 2 divisors, whose sum is σ = 6816740534138. Its totient is φ = 6816740534136.

The previous prime is 6816740534111. The next prime is 6816740534143. The reversal of 6816740534137 is 7314350476186.

6816740534137 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4973163143481 + 1843577390656 = 2230059^2 + 1357784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6816740534137 is a prime.

It is not a weakly prime, because it can be changed into another prime (6816740531137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408370267068 + 3408370267069.

It is an arithmetic number, because the mean of its divisors is an integer number (3408370267069).

Almost surely, 2^{6816740534137} is an apocalyptic number.

It is an amenable number.

6816740534137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6816740534137 is an equidigital number, since it uses as much as digits as its factorization.

6816740534137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 6816740534137 in words is "six trillion, eight hundred sixteen billion, seven hundred forty million, five hundred thirty-four thousand, one hundred thirty-seven".