6566499133 has 2 divisors, whose sum is σ = 6566499134. Its totient is φ = 6566499132.

The previous prime is 6566499131. The next prime is 6566499167. The reversal of 6566499133 is 3319946656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6563106169 + 3392964 = 81013^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 6566499133 - 2¹ = 6566499131 is a prime.

Together with 6566499131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6566499131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283249566 + 3283249567.

It is an arithmetic number, because the mean of its divisors is an integer number (3283249567).

Almost surely, 2^6566499133 is an apocalyptic number.

It is an amenable number.

6566499133 is a deficient number, since it is larger than the sum of its proper divisors (1).

6566499133 is an equidigital number, since it uses as much as digits as its factorization.

6566499133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 52.

The square root of 6566499133 is about 81033.9381555654. The cubic root of 6566499133 is about 1872.5983242992.

The spelling of 6566499133 in words is "six billion, five hundred sixty-six million, four hundred ninety-nine thousand, one hundred thirty-three".