65571051670213 has 2 divisors, whose sum is σ = 65571051670214. Its totient is φ = 65571051670212.

The previous prime is 65571051670183. The next prime is 65571051670219. The reversal of 65571051670213 is 31207615017556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60401217199684 + 5169834470529 = 7771822^2 + 2273727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65571051670213 is a prime.

It is a super-2 number, since 2×65571051670213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65571051670219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785525835106 + 32785525835107.

It is an arithmetic number, because the mean of its divisors is an integer number (32785525835107).

Almost surely, 2^{65571051670213} is an apocalyptic number.

It is an amenable number.

65571051670213 is a deficient number, since it is larger than the sum of its proper divisors (1).

65571051670213 is an equidigital number, since it uses as much as digits as its factorization.

65571051670213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323000, while the sum is 49.

Adding to 65571051670213 its reverse (31207615017556), we get a palindrome (96778666687769).

The spelling of 65571051670213 in words is "sixty-five trillion, five hundred seventy-one billion, fifty-one million, six hundred seventy thousand, two hundred thirteen".