320677180961 has 2 divisors, whose sum is σ = 320677180962. Its totient is φ = 320677180960.

The previous prime is 320677180913. The next prime is 320677181021. The reversal of 320677180961 is 169081776023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319768761361 + 908419600 = 565481^2 + 30140^2 .

It is a cyclic number.

It is not a de Polignac number, because 320677180961 - 2²² = 320672986657 is a prime.

It is not a weakly prime, because it can be changed into another prime (320677180261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160338590480 + 160338590481.

It is an arithmetic number, because the mean of its divisors is an integer number (160338590481).

Almost surely, 2^320677180961 is an apocalyptic number.

It is an amenable number.

320677180961 is a deficient number, since it is larger than the sum of its proper divisors (1).

320677180961 is an equidigital number, since it uses as much as digits as its factorization.

320677180961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 320677180961 in words is "three hundred twenty billion, six hundred seventy-seven million, one hundred eighty thousand, nine hundred sixty-one".