320695079156401 has 2 divisors, whose sum is σ = 320695079156402. Its totient is φ = 320695079156400.

The previous prime is 320695079156351. The next prime is 320695079156437. The reversal of 320695079156401 is 104651970596023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184737706830625 + 135957372325776 = 13591825^2 + 11660076^2 .

It is an emirp because it is prime and its reverse (104651970596023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320695079156401 - 2⁹ = 320695079155889 is a prime.

It is not a weakly prime, because it can be changed into another prime (320695079156461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160347539578200 + 160347539578201.

It is an arithmetic number, because the mean of its divisors is an integer number (160347539578201).

Almost surely, 2^{320695079156401} is an apocalyptic number.

It is an amenable number.

320695079156401 is a deficient number, since it is larger than the sum of its proper divisors (1).

320695079156401 is an equidigital number, since it uses as much as digits as its factorization.

320695079156401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 320695079156401 in words is "three hundred twenty trillion, six hundred ninety-five billion, seventy-nine million, one hundred fifty-six thousand, four hundred one".