216462346070209 has 2 divisors, whose sum is σ = 216462346070210. Its totient is φ = 216462346070208.

The previous prime is 216462346070197. The next prime is 216462346070297. The reversal of 216462346070209 is 902070643264612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215562504110209 + 899841960000 = 14682047^2 + 948600^2 .

It is a cyclic number.

It is not a de Polignac number, because 216462346070209 - 2¹⁷ = 216462345939137 is a prime.

It is not a weakly prime, because it can be changed into another prime (216462346070809) 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, 108231173035104 + 108231173035105.

It is an arithmetic number, because the mean of its divisors is an integer number (108231173035105).

Almost surely, 2^{216462346070209} is an apocalyptic number.

It is an amenable number.

216462346070209 is a deficient number, since it is larger than the sum of its proper divisors (1).

216462346070209 is an equidigital number, since it uses as much as digits as its factorization.

216462346070209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 216462346070209 in words is "two hundred sixteen trillion, four hundred sixty-two billion, three hundred forty-six million, seventy thousand, two hundred nine".