321365723667277 has 2 divisors, whose sum is σ = 321365723667278. Its totient is φ = 321365723667276.

The previous prime is 321365723667227. The next prime is 321365723667281. The reversal of 321365723667277 is 772766327563123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269037774421641 + 52327949245636 = 16402371^2 + 7233806^2 .

It is an emirp because it is prime and its reverse (772766327563123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321365723667277 - 2³⁵ = 321331363928909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321365723667227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160682861833638 + 160682861833639.

It is an arithmetic number, because the mean of its divisors is an integer number (160682861833639).

Almost surely, 2^{321365723667277} is an apocalyptic number.

It is an amenable number.

321365723667277 is a deficient number, since it is larger than the sum of its proper divisors (1).

321365723667277 is an equidigital number, since it uses as much as digits as its factorization.

321365723667277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560105280, while the sum is 67.

The spelling of 321365723667277 in words is "three hundred twenty-one trillion, three hundred sixty-five billion, seven hundred twenty-three million, six hundred sixty-seven thousand, two hundred seventy-seven".