1660502442317 has 2 divisors, whose sum is σ = 1660502442318. Its totient is φ = 1660502442316.

The previous prime is 1660502442307. The next prime is 1660502442371. The reversal of 1660502442317 is 7132442050661.

Together with next prime (1660502442371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1640310316516 + 20192125801 = 1280746^2 + 142099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660502442317 - 2¹⁸ = 1660502180173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660502442307) 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, 830251221158 + 830251221159.

It is an arithmetic number, because the mean of its divisors is an integer number (830251221159).

Almost surely, 2^{1660502442317} is an apocalyptic number.

It is an amenable number.

1660502442317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660502442317 is an equidigital number, since it uses as much as digits as its factorization.

1660502442317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 1660502442317 its reverse (7132442050661), we get a palindrome (8792944492978).

The spelling of 1660502442317 in words is "one trillion, six hundred sixty billion, five hundred two million, four hundred forty-two thousand, three hundred seventeen".