320164208009 has 4 divisors (see below), whose sum is σ = 320662131216. Its totient is φ = 319666284804.

The previous prime is 320164208003. The next prime is 320164208017. The reversal of 320164208009 is 900802461023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320164208009 - 2²⁴ = 320147430793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320164208009.

It is not an unprimeable number, because it can be changed into a prime (320164208003) 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 in 3 ways as a sum of consecutive naturals, for example, 248960639 + ... + 248961924.

It is an arithmetic number, because the mean of its divisors is an integer number (80165532804).

Almost surely, 2^320164208009 is an apocalyptic number.

It is an amenable number.

320164208009 is a deficient number, since it is larger than the sum of its proper divisors (497923207).

320164208009 is an equidigital number, since it uses as much as digits as its factorization.

320164208009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497923206.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 320164208009 in words is "three hundred twenty billion, one hundred sixty-four million, two hundred eight thousand, nine".