65217216607 has 2 divisors, whose sum is σ = 65217216608. Its totient is φ = 65217216606.

The previous prime is 65217216593. The next prime is 65217216677. The reversal of 65217216607 is 70661271256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65217216607 - 2¹⁹ = 65216692319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65217216677) 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, 32608608303 + 32608608304.

It is an arithmetic number, because the mean of its divisors is an integer number (32608608304).

Almost surely, 2^65217216607 is an apocalyptic number.

65217216607 is a deficient number, since it is larger than the sum of its proper divisors (1).

65217216607 is an equidigital number, since it uses as much as digits as its factorization.

65217216607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 65217216607 in words is "sixty-five billion, two hundred seventeen million, two hundred sixteen thousand, six hundred seven".