6511706611 has 2 divisors, whose sum is σ = 6511706612. Its totient is φ = 6511706610.

The previous prime is 6511706609. The next prime is 6511706647. The reversal of 6511706611 is 1166071156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6511706611 - 2¹ = 6511706609 is a prime.

It is a super-2 number, since 2×6511706611² = 84804645975482210642, which contains 22 as substring.

Together with 6511706609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6511706681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255853305 + 3255853306.

It is an arithmetic number, because the mean of its divisors is an integer number (3255853306).

Almost surely, 2^6511706611 is an apocalyptic number.

6511706611 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511706611 is an equidigital number, since it uses as much as digits as its factorization.

6511706611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 6511706611 is about 80695.1461427514. The cubic root of 6511706611 is about 1867.3752925249.

Adding to 6511706611 its reverse (1166071156), we get a palindrome (7677777767).

The spelling of 6511706611 in words is "six billion, five hundred eleven million, seven hundred six thousand, six hundred eleven".