1686029240317 has 2 divisors, whose sum is σ = 1686029240318. Its totient is φ = 1686029240316.

The previous prime is 1686029240281. The next prime is 1686029240321. The reversal of 1686029240317 is 7130429206861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282116877636 + 403912362681 = 1132306^2 + 635541^2 .

It is an emirp because it is prime and its reverse (7130429206861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1686029240317 - 2¹¹ = 1686029238269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686029240347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843014620158 + 843014620159.

It is an arithmetic number, because the mean of its divisors is an integer number (843014620159).

Almost surely, 2^{1686029240317} is an apocalyptic number.

It is an amenable number.

1686029240317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686029240317 is an equidigital number, since it uses as much as digits as its factorization.

1686029240317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1686029240317 in words is "one trillion, six hundred eighty-six billion, twenty-nine million, two hundred forty thousand, three hundred seventeen".