320008178345 has 32 divisors (see below), whose sum is σ = 398756475936. Its totient is φ = 246332620800.

The previous prime is 320008178317. The next prime is 320008178377. The reversal of 320008178345 is 543871800023.

It can be written as a sum of positive squares in 16 ways, for example, as 16580167696 + 303428010649 = 128764^2 + 550843^2 .

It is not a de Polignac number, because 320008178345 - 2¹² = 320008174249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26570525 + ... + 26582565.

It is an arithmetic number, because the mean of its divisors is an integer number (12461139873).

Almost surely, 2^320008178345 is an apocalyptic number.

It is an amenable number.

320008178345 is a deficient number, since it is larger than the sum of its proper divisors (78748297591).

320008178345 is a wasteful number, since it uses less digits than its factorization.

320008178345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13661.

The product of its (nonzero) digits is 161280, while the sum is 41.

Adding to 320008178345 its reverse (543871800023), we get a palindrome (863879978368).

The spelling of 320008178345 in words is "three hundred twenty billion, eight million, one hundred seventy-eight thousand, three hundred forty-five".