6551116529 has 2 divisors, whose sum is σ = 6551116530. Its totient is φ = 6551116528.

The previous prime is 6551116499. The next prime is 6551116531. The reversal of 6551116529 is 9256111556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4013475904 + 2537640625 = 63352^2 + 50375^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551116529 - 2¹² = 6551112433 is a prime.

Together with 6551116531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6551116829) 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, 3275558264 + 3275558265.

It is an arithmetic number, because the mean of its divisors is an integer number (3275558265).

Almost surely, 2^6551116529 is an apocalyptic number.

It is an amenable number.

6551116529 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551116529 is an equidigital number, since it uses as much as digits as its factorization.

6551116529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 41.

The square root of 6551116529 is about 80938.9679264568. The cubic root of 6551116529 is about 1871.1349386958.

The spelling of 6551116529 in words is "six billion, five hundred fifty-one million, one hundred sixteen thousand, five hundred twenty-nine".