320326414332161 has 4 divisors (see below), whose sum is σ = 339169144587012. Its totient is φ = 301483684077312.

The previous prime is 320326414332137. The next prime is 320326414332167. The reversal of 320326414332161 is 161233414623023.

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 235363739381761 + 84962674950400 = 15341569^2 + 9217520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320326414332161 is a prime.

It is a super-2 number, since 2×320326414332161² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320326414332167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9421365127400 + ... + 9421365127433.

It is an arithmetic number, because the mean of its divisors is an integer number (84792286146753).

Almost surely, 2^{320326414332161} is an apocalyptic number.

It is an amenable number.

320326414332161 is a deficient number, since it is larger than the sum of its proper divisors (18842730254851).

320326414332161 is a wasteful number, since it uses less digits than its factorization.

320326414332161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18842730254850.

The product of its (nonzero) digits is 373248, while the sum is 41.

Adding to 320326414332161 its reverse (161233414623023), we get a palindrome (481559828955184).

The spelling of 320326414332161 in words is "three hundred twenty trillion, three hundred twenty-six billion, four hundred fourteen million, three hundred thirty-two thousand, one hundred sixty-one".