16686853687 has 8 divisors (see below), whose sum is σ = 19090963872. Its totient is φ = 14287812000.

The previous prime is 16686853681. The next prime is 16686853691. The reversal of 16686853687 is 78635868661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16686853687 - 2⁷ = 16686853559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686853681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260064 + ... + 1273237.

It is an arithmetic number, because the mean of its divisors is an integer number (2386370484).

Almost surely, 2^16686853687 is an apocalyptic number.

16686853687 is a deficient number, since it is larger than the sum of its proper divisors (2404110185).

16686853687 is an equidigital number, since it uses as much as digits as its factorization.

16686853687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534249.

The product of its digits is 69672960, while the sum is 64.

The spelling of 16686853687 in words is "sixteen billion, six hundred eighty-six million, eight hundred fifty-three thousand, six hundred eighty-seven".