664466442259 has 2 divisors, whose sum is σ = 664466442260. Its totient is φ = 664466442258.

The previous prime is 664466442257. The next prime is 664466442331. The reversal of 664466442259 is 952244664466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664466442259 - 2¹ = 664466442257 is a prime.

Together with 664466442257, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (664466442257) 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, 332233221129 + 332233221130.

It is an arithmetic number, because the mean of its divisors is an integer number (332233221130).

Almost surely, 2^664466442259 is an apocalyptic number.

664466442259 is a deficient number, since it is larger than the sum of its proper divisors (1).

664466442259 is an equidigital number, since it uses as much as digits as its factorization.

664466442259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59719680, while the sum is 58.

The spelling of 664466442259 in words is "six hundred sixty-four billion, four hundred sixty-six million, four hundred forty-two thousand, two hundred fifty-nine".