1685671740085 has 16 divisors (see below), whose sum is σ = 2035500840576. Its totient is φ = 1340078845248.

The previous prime is 1685671740031. The next prime is 1685671740091. The reversal of 1685671740085 is 5800471765861.

It is a cyclic number.

It is not a de Polignac number, because 1685671740085 - 2⁹ = 1685671739573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649694 + ... + 3223696.

It is an arithmetic number, because the mean of its divisors is an integer number (127218802536).

Almost surely, 2^{1685671740085} is an apocalyptic number.

It is an amenable number.

1685671740085 is a deficient number, since it is larger than the sum of its proper divisors (349829100491).

1685671740085 is a wasteful number, since it uses less digits than its factorization.

1685671740085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577692.

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 1685671740085 in words is "one trillion, six hundred eighty-five billion, six hundred seventy-one million, seven hundred forty thousand, eighty-five".