16686868685037 has 8 divisors (see below), whose sum is σ = 22249185887136. Its totient is φ = 11124565303152.

The previous prime is 16686868684991. The next prime is 16686868685059. The reversal of 16686868685037 is 73058686868661.

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

It is not a de Polignac number, because 16686868685037 - 2¹² = 16686868680941 is a prime.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686868685537) 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, 199503 + ... + 5780444.

It is an arithmetic number, because the mean of its divisors is an integer number (2781148235892).

Almost surely, 2^{16686868685037} is an apocalyptic number.

It is an amenable number.

16686868685037 is a deficient number, since it is larger than the sum of its proper divisors (5562317202099).

16686868685037 is an equidigital number, since it uses as much as digits as its factorization.

16686868685037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910107.

The product of its (nonzero) digits is 3344302080, while the sum is 78.

The spelling of 16686868685037 in words is "sixteen trillion, six hundred eighty-six billion, eight hundred sixty-eight million, six hundred eighty-five thousand, thirty-seven".