6805051213 has 2 divisors, whose sum is σ = 6805051214. Its totient is φ = 6805051212.

The previous prime is 6805051171. The next prime is 6805051223. The reversal of 6805051213 is 3121505086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5046255369 + 1758795844 = 71037^2 + 41938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6805051213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6805051223) 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, 3402525606 + 3402525607.

It is an arithmetic number, because the mean of its divisors is an integer number (3402525607).

Almost surely, 2^6805051213 is an apocalyptic number.

It is an amenable number.

6805051213 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805051213 is an equidigital number, since it uses as much as digits as its factorization.

6805051213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 6805051213 is about 82492.7343043010. The cubic root of 6805051213 is about 1895.0054615632.

Adding to 6805051213 its reverse (3121505086), we get a palindrome (9926556299).

The spelling of 6805051213 in words is "six billion, eight hundred five million, fifty-one thousand, two hundred thirteen".