543666311360321 has 2 divisors, whose sum is σ = 543666311360322. Its totient is φ = 543666311360320.

The previous prime is 543666311360257. The next prime is 543666311360573. The reversal of 543666311360321 is 123063113666345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 482696762470321 + 60969548890000 = 21970361^2 + 7808300^2 .

It is a cyclic number.

It is not a de Polignac number, because 543666311360321 - 2⁶ = 543666311360257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 543666311360321.

It is not a weakly prime, because it can be changed into another prime (543666310360321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271833155680160 + 271833155680161.

It is an arithmetic number, because the mean of its divisors is an integer number (271833155680161).

Almost surely, 2^{543666311360321} is an apocalyptic number.

It is an amenable number.

543666311360321 is a deficient number, since it is larger than the sum of its proper divisors (1).

543666311360321 is an equidigital number, since it uses as much as digits as its factorization.

543666311360321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 543666311360321 in words is "five hundred forty-three trillion, six hundred sixty-six billion, three hundred eleven million, three hundred sixty thousand, three hundred twenty-one".