1685168364911 has 2 divisors, whose sum is σ = 1685168364912. Its totient is φ = 1685168364910.

The previous prime is 1685168364889. The next prime is 1685168364923. The reversal of 1685168364911 is 1194638615861.

It is a strong prime.

It is an emirp because it is prime and its reverse (1194638615861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1685168364911 - 2¹⁴ = 1685168348527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685168364991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842584182455 + 842584182456.

It is an arithmetic number, because the mean of its divisors is an integer number (842584182456).

Almost surely, 2^{1685168364911} is an apocalyptic number.

1685168364911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685168364911 is an equidigital number, since it uses as much as digits as its factorization.

1685168364911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The spelling of 1685168364911 in words is "one trillion, six hundred eighty-five billion, one hundred sixty-eight million, three hundred sixty-four thousand, nine hundred eleven".