320774170205 has 4 divisors (see below), whose sum is σ = 384929004252. Its totient is φ = 256619336160.

The previous prime is 320774170163. The next prime is 320774170243. The reversal of 320774170205 is 502071477023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156798576484 + 163975593721 = 395978^2 + 404939^2 .

It is not a de Polignac number, because 320774170205 - 2²² = 320769975901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32077417016 + ... + 32077417025.

It is an arithmetic number, because the mean of its divisors is an integer number (96232251063).

Almost surely, 2^320774170205 is an apocalyptic number.

It is an amenable number.

320774170205 is a deficient number, since it is larger than the sum of its proper divisors (64154834047).

320774170205 is an equidigital number, since it uses as much as digits as its factorization.

320774170205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64154834046.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 320774170205 in words is "three hundred twenty billion, seven hundred seventy-four million, one hundred seventy thousand, two hundred five".