1685005204043 has 12 divisors (see below), whose sum is σ = 2075408571672. Its totient is φ = 1359331928640.

The previous prime is 1685005204039. The next prime is 1685005204079. The reversal of 1685005204043 is 3404025005861.

It is not a de Polignac number, because 1685005204043 - 2² = 1685005204039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1685005203988 and 1685005204006.

It is not an unprimeable number, because it can be changed into a prime (1685005204013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1011406853 + ... + 1011408518.

It is an arithmetic number, because the mean of its divisors is an integer number (172950714306).

Almost surely, 2^{1685005204043} is an apocalyptic number.

1685005204043 is a deficient number, since it is larger than the sum of its proper divisors (390403367629).

1685005204043 is a wasteful number, since it uses less digits than its factorization.

1685005204043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022815402 (or 2022815395 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 1685005204043 in words is "one trillion, six hundred eighty-five billion, five million, two hundred four thousand, forty-three".