1685036666854 has 16 divisors (see below), whose sum is σ = 2570505146640. Its totient is φ = 828202842880.

The previous prime is 1685036666839. The next prime is 1685036666867. The reversal of 1685036666854 is 4586666305861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2571102 + ... + 3159214.

It is an arithmetic number, because the mean of its divisors is an integer number (160656571665).

Almost surely, 2^{1685036666854} is an apocalyptic number.

1685036666854 is a deficient number, since it is larger than the sum of its proper divisors (885468479786).

1685036666854 is a wasteful number, since it uses less digits than its factorization.

1685036666854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612455.

The product of its (nonzero) digits is 149299200, while the sum is 64.

The spelling of 1685036666854 in words is "one trillion, six hundred eighty-five billion, thirty-six million, six hundred sixty-six thousand, eight hundred fifty-four".