64583085209 has 2 divisors, whose sum is σ = 64583085210. Its totient is φ = 64583085208.

The previous prime is 64583085179. The next prime is 64583085223. The reversal of 64583085209 is 90258038546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53752104025 + 10830981184 = 231845^2 + 104072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64583085209 is a prime.

It is a super-2 number, since 2×64583085209² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64583085299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32291542604 + 32291542605.

It is an arithmetic number, because the mean of its divisors is an integer number (32291542605).

Almost surely, 2^64583085209 is an apocalyptic number.

It is an amenable number.

64583085209 is a deficient number, since it is larger than the sum of its proper divisors (1).

64583085209 is an equidigital number, since it uses as much as digits as its factorization.

64583085209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 64583085209 in words is "sixty-four billion, five hundred eighty-three million, eighty-five thousand, two hundred nine".