6810137669 has 2 divisors, whose sum is σ = 6810137670. Its totient is φ = 6810137668.

The previous prime is 6810137651. The next prime is 6810137671. The reversal of 6810137669 is 9667310186.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3704304769 + 3105832900 = 60863^2 + 55730^2 .

It is a cyclic number.

It is not a de Polignac number, because 6810137669 - 2²⁰ = 6809089093 is a prime.

It is a super-2 number, since 2×6810137669² = 92755950141465507122, which contains 22 as substring.

Together with 6810137671, 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 (6810137699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405068834 + 3405068835.

It is an arithmetic number, because the mean of its divisors is an integer number (3405068835).

Almost surely, 2^6810137669 is an apocalyptic number.

It is an amenable number.

6810137669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6810137669 is an equidigital number, since it uses as much as digits as its factorization.

6810137669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 6810137669 is about 82523.5582667156. The cubic root of 6810137669 is about 1895.4774864882.

The spelling of 6810137669 in words is "six billion, eight hundred ten million, one hundred thirty-seven thousand, six hundred sixty-nine".