16685001685 has 32 divisors (see below), whose sum is σ = 22399483392. Its totient is φ = 11826185280.

The previous prime is 16685001631. The next prime is 16685001733. The reversal of 16685001685 is 58610058661.

It is not a de Polignac number, because 16685001685 - 2¹¹ = 16684999637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1096902 + ... + 1112008.

It is an arithmetic number, because the mean of its divisors is an integer number (699983856).

Almost surely, 2^16685001685 is an apocalyptic number.

It is an amenable number.

16685001685 is a deficient number, since it is larger than the sum of its proper divisors (5714481707).

16685001685 is a wasteful number, since it uses less digits than its factorization.

16685001685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15633.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 16685001685 in words is "sixteen billion, six hundred eighty-five million, one thousand, six hundred eighty-five".