75660070217 has 2 divisors, whose sum is σ = 75660070218. Its totient is φ = 75660070216.

The previous prime is 75660070207. The next prime is 75660070223. The reversal of 75660070217 is 71207006657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53754886201 + 21905184016 = 231851^2 + 148004^2 .

It is a cyclic number.

It is not a de Polignac number, because 75660070217 - 2¹⁶ = 75660004681 is a prime.

It is not a weakly prime, because it can be changed into another prime (75660070207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37830035108 + 37830035109.

It is an arithmetic number, because the mean of its divisors is an integer number (37830035109).

Almost surely, 2^75660070217 is an apocalyptic number.

It is an amenable number.

75660070217 is a deficient number, since it is larger than the sum of its proper divisors (1).

75660070217 is an equidigital number, since it uses as much as digits as its factorization.

75660070217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 75660070217 in words is "seventy-five billion, six hundred sixty million, seventy thousand, two hundred seventeen".