1685005204668 has 24 divisors (see below), whose sum is σ = 3941944301568. Its totient is φ = 560201902896.

The previous prime is 1685005204657. The next prime is 1685005204699. The reversal of 1685005204668 is 8664025005861.

It is a self number, because there is not a number n which added to its sum of digits gives 1685005204668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183307546 + ... + 183316737.

It is an arithmetic number, because the mean of its divisors is an integer number (164247679232).

Almost surely, 2^{1685005204668} is an apocalyptic number.

It is an amenable number.

1685005204668 is an abundant number, since it is smaller than the sum of its proper divisors (2256939096900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685005204668 is a wasteful number, since it uses less digits than its factorization.

1685005204668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366624673 (or 366624671 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 1685005204668 in words is "one trillion, six hundred eighty-five billion, five million, two hundred four thousand, six hundred sixty-eight".