16686687003667 has 4 divisors (see below), whose sum is σ = 16686737347336. Its totient is φ = 16686636660000.

The previous prime is 16686687003629. The next prime is 16686687003677. The reversal of 16686687003667 is 76630078668661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16686687003667 - 2²³ = 16686678615059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16686687003596 and 16686687003605.

It is not an unprimeable number, because it can be changed into a prime (16686687003677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24671334 + ... + 25338667.

It is an arithmetic number, because the mean of its divisors is an integer number (4171684336834).

Almost surely, 2^{16686687003667} is an apocalyptic number.

16686687003667 is a deficient number, since it is larger than the sum of its proper divisors (50343669).

16686687003667 is an equidigital number, since it uses as much as digits as its factorization.

16686687003667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50343668.

The product of its (nonzero) digits is 438939648, while the sum is 70.

The spelling of 16686687003667 in words is "sixteen trillion, six hundred eighty-six billion, six hundred eighty-seven million, three thousand, six hundred sixty-seven".