320565163161 has 8 divisors (see below), whose sum is σ = 430785731584. Its totient is φ = 212027351760.

The previous prime is 320565163159. The next prime is 320565163169. The reversal of 320565163161 is 161361565023.

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

It is not a de Polignac number, because 320565163161 - 2¹ = 320565163159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320565163169) 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, 420688810 + ... + 420689571.

It is an arithmetic number, because the mean of its divisors is an integer number (53848216448).

Almost surely, 2^320565163161 is an apocalyptic number.

It is an amenable number.

320565163161 is a deficient number, since it is larger than the sum of its proper divisors (110220568423).

320565163161 is a wasteful number, since it uses less digits than its factorization.

320565163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841378511.

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 320565163161 in words is "three hundred twenty billion, five hundred sixty-five million, one hundred sixty-three thousand, one hundred sixty-one".