1687593342329 has 2 divisors, whose sum is σ = 1687593342330. Its totient is φ = 1687593342328.

The previous prime is 1687593342299. The next prime is 1687593342343. The reversal of 1687593342329 is 9232433957861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096047767929 + 591545574400 = 1046923^2 + 769120^2 .

It is an emirp because it is prime and its reverse (9232433957861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1687593342329 - 2²⁴ = 1687576565113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1687593342229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843796671164 + 843796671165.

It is an arithmetic number, because the mean of its divisors is an integer number (843796671165).

Almost surely, 2^{1687593342329} is an apocalyptic number.

It is an amenable number.

1687593342329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1687593342329 is an equidigital number, since it uses as much as digits as its factorization.

1687593342329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 62.

The spelling of 1687593342329 in words is "one trillion, six hundred eighty-seven billion, five hundred ninety-three million, three hundred forty-two thousand, three hundred twenty-nine".