16686880803287 has 8 divisors (see below), whose sum is σ = 16696973383200. Its totient is φ = 16676790344704.

The previous prime is 16686880803251. The next prime is 16686880803311. The reversal of 16686880803287 is 78230808868661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16686880803287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16686880803287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686880803247) 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, 15350414 + ... + 16401492.

It is an arithmetic number, because the mean of its divisors is an integer number (2087121672900).

Almost surely, 2^{16686880803287} is an apocalyptic number.

16686880803287 is a deficient number, since it is larger than the sum of its proper divisors (10092579913).

16686880803287 is a wasteful number, since it uses less digits than its factorization.

16686880803287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060665.

The product of its (nonzero) digits is 297271296, while the sum is 71.

The spelling of 16686880803287 in words is "sixteen trillion, six hundred eighty-six billion, eight hundred eighty million, eight hundred three thousand, two hundred eighty-seven".