6466351609 has 2 divisors, whose sum is σ = 6466351610. Its totient is φ = 6466351608.

The previous prime is 6466351579. The next prime is 6466351627. The reversal of 6466351609 is 9061536646.

6466351609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5741395984 + 724955625 = 75772^2 + 26925^2 .

It is a cyclic number.

It is not a de Polignac number, because 6466351609 - 2²⁵ = 6432797177 is a prime.

It is not a weakly prime, because it can be changed into another prime (6466351109) 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, 3233175804 + 3233175805.

It is an arithmetic number, because the mean of its divisors is an integer number (3233175805).

Almost surely, 2^6466351609 is an apocalyptic number.

It is an amenable number.

6466351609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6466351609 is an equidigital number, since it uses as much as digits as its factorization.

6466351609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 6466351609 is about 80413.6282541709. The cubic root of 6466351609 is about 1863.0296722983.

The spelling of 6466351609 in words is "six billion, four hundred sixty-six million, three hundred fifty-one thousand, six hundred nine".