1685415126163 has 2 divisors, whose sum is σ = 1685415126164. Its totient is φ = 1685415126162.

The previous prime is 1685415126139. The next prime is 1685415126209. The reversal of 1685415126163 is 3616215145861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1685415126163 - 2⁹ = 1685415125651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1685415124163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842707563081 + 842707563082.

It is an arithmetic number, because the mean of its divisors is an integer number (842707563082).

Almost surely, 2^{1685415126163} is an apocalyptic number.

1685415126163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685415126163 is an equidigital number, since it uses as much as digits as its factorization.

1685415126163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 49.

The spelling of 1685415126163 in words is "one trillion, six hundred eighty-five billion, four hundred fifteen million, one hundred twenty-six thousand, one hundred sixty-three".