6771211693 has 2 divisors, whose sum is σ = 6771211694. Its totient is φ = 6771211692.

The previous prime is 6771211663. The next prime is 6771211703. The reversal of 6771211693 is 3961121776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6753881124 + 17330569 = 82182^2 + 4163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6771211693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6771211633) 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, 3385605846 + 3385605847.

It is an arithmetic number, because the mean of its divisors is an integer number (3385605847).

Almost surely, 2^6771211693 is an apocalyptic number.

It is an amenable number.

6771211693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6771211693 is an equidigital number, since it uses as much as digits as its factorization.

6771211693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 6771211693 is about 82287.3726218063. The cubic root of 6771211693 is about 1891.8591387702.

The spelling of 6771211693 in words is "six billion, seven hundred seventy-one million, two hundred eleven thousand, six hundred ninety-three".