16685020203685 has 32 divisors (see below), whose sum is σ = 21295916167680. Its totient is φ = 12527007091200.

The previous prime is 16685020203623. The next prime is 16685020203779. The reversal of 16685020203685 is 58630202058661.

It is not a de Polignac number, because 16685020203685 - 2³¹ = 16682872720037 is a prime.

It is a super-3 number, since 3×16685020203685³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3567067 + ... + 6789256.

It is an arithmetic number, because the mean of its divisors is an integer number (665497380240).

Almost surely, 2^{16685020203685} is an apocalyptic number.

It is an amenable number.

16685020203685 is a deficient number, since it is larger than the sum of its proper divisors (4610895963995).

16685020203685 is a wasteful number, since it uses less digits than its factorization.

16685020203685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356669.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 16685020203685 in words is "sixteen trillion, six hundred eighty-five billion, twenty million, two hundred three thousand, six hundred eighty-five".