320164208005 has 8 divisors (see below), whose sum is σ = 384211819512. Its totient is φ = 256121519808.

The previous prime is 320164208003. The next prime is 320164208017. The reversal of 320164208005 is 500802461023.

It can be written as a sum of positive squares in 4 ways, for example, as 159040642401 + 161123565604 = 398799^2 + 401402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320164208005 - 2¹ = 320164208003 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1086214 + ... + 1349143.

It is an arithmetic number, because the mean of its divisors is an integer number (48026477439).

Almost surely, 2^320164208005 is an apocalyptic number.

It is an amenable number.

320164208005 is a deficient number, since it is larger than the sum of its proper divisors (64047611507).

320164208005 is a wasteful number, since it uses less digits than its factorization.

320164208005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461655.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 320164208005 its reverse (500802461023), we get a palindrome (820966669028).

The spelling of 320164208005 in words is "three hundred twenty billion, one hundred sixty-four million, two hundred eight thousand, five".