65212055034209 has 2 divisors, whose sum is σ = 65212055034210. Its totient is φ = 65212055034208.

The previous prime is 65212055034197. The next prime is 65212055034223. The reversal of 65212055034209 is 90243055021256.

It is a happy number.

65212055034209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38420509671184 + 26791545363025 = 6198428^2 + 5176055^2 .

It is a cyclic number.

It is not a de Polignac number, because 65212055034209 - 2⁸ = 65212055033953 is a prime.

It is a super-2 number, since 2×65212055034209² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65212055034209.

It is not a weakly prime, because it can be changed into another prime (65212055034109) 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, 32606027517104 + 32606027517105.

It is an arithmetic number, because the mean of its divisors is an integer number (32606027517105).

Almost surely, 2^{65212055034209} is an apocalyptic number.

It is an amenable number.

65212055034209 is a deficient number, since it is larger than the sum of its proper divisors (1).

65212055034209 is an equidigital number, since it uses as much as digits as its factorization.

65212055034209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 65212055034209 in words is "sixty-five trillion, two hundred twelve billion, fifty-five million, thirty-four thousand, two hundred nine".