321450553542449 has 2 divisors, whose sum is σ = 321450553542450. Its totient is φ = 321450553542448.

The previous prime is 321450553542421. The next prime is 321450553542473. The reversal of 321450553542449 is 944245355054123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307315450072225 + 14135103470224 = 17530415^2 + 3759668^2 .

It is a cyclic number.

It is not a de Polignac number, because 321450553542449 - 2²⁴ = 321450536765233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321450553542394 and 321450553542403.

It is not a weakly prime, because it can be changed into another prime (321450553542479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160725276771224 + 160725276771225.

It is an arithmetic number, because the mean of its divisors is an integer number (160725276771225).

Almost surely, 2^{321450553542449} is an apocalyptic number.

It is an amenable number.

321450553542449 is a deficient number, since it is larger than the sum of its proper divisors (1).

321450553542449 is an equidigital number, since it uses as much as digits as its factorization.

321450553542449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840000, while the sum is 56.

The spelling of 321450553542449 in words is "three hundred twenty-one trillion, four hundred fifty billion, five hundred fifty-three million, five hundred forty-two thousand, four hundred forty-nine".