64319146209 has 12 divisors (see below), whose sum is σ = 92913158052. Its totient is φ = 42875865600.

The previous prime is 64319146187. The next prime is 64319146217. The reversal of 64319146209 is 90264191346.

64319146209 is a `hidden beast` number, since 6 + 4 + 3 + 1 + 9 + 14 + 620 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54650750625 + 9668395584 = 233775^2 + 98328^2 .

It is not a de Polignac number, because 64319146209 - 2¹³ = 64319138017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64319146249) 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 in 11 ways as a sum of consecutive naturals, for example, 180432 + ... + 401489.

It is an arithmetic number, because the mean of its divisors is an integer number (7742763171).

Almost surely, 2^64319146209 is an apocalyptic number.

It is an amenable number.

64319146209 is a deficient number, since it is larger than the sum of its proper divisors (28594011843).

64319146209 is a wasteful number, since it uses less digits than its factorization.

64319146209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594208 (or 594205 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 64319146209 in words is "sixty-four billion, three hundred nineteen million, one hundred forty-six thousand, two hundred nine".