16686707328406 has 8 divisors (see below), whose sum is σ = 26502417521640. Its totient is φ = 7852568154528.

The previous prime is 16686707328323. The next prime is 16686707328419. The reversal of 16686707328406 is 60482370768661.

16686707328406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245392754796 + ... + 245392754863.

It is an arithmetic number, because the mean of its divisors is an integer number (3312802190205).

Almost surely, 2^{16686707328406} is an apocalyptic number.

16686707328406 is a deficient number, since it is larger than the sum of its proper divisors (9815710193234).

16686707328406 is a wasteful number, since it uses less digits than its factorization.

16686707328406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490785509678.

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 16686707328406 in words is "sixteen trillion, six hundred eighty-six billion, seven hundred seven million, three hundred twenty-eight thousand, four hundred six".