320075680862161 has 16 divisors (see below), whose sum is σ = 373266955152000. Its totient is φ = 274349955156144.

The previous prime is 320075680862159. The next prime is 320075680862243. The reversal of 320075680862161 is 161268086570023.

It is a happy number.

It is not a de Polignac number, because 320075680862161 - 2¹ = 320075680862159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320075680862141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208975635 + ... + 210501703.

It is an arithmetic number, because the mean of its divisors is an integer number (23329184697000).

Almost surely, 2^{320075680862161} is an apocalyptic number.

It is an amenable number.

320075680862161 is a deficient number, since it is larger than the sum of its proper divisors (53191274289839).

320075680862161 is an equidigital number, since it uses as much as digits as its factorization.

320075680862161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137573 (or 2137559 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 320075680862161 in words is "three hundred twenty trillion, seventy-five billion, six hundred eighty million, eight hundred sixty-two thousand, one hundred sixty-one".