16686143430386 has 8 divisors (see below), whose sum is σ = 25031844017244. Its totient is φ = 8342195424640.

The previous prime is 16686143430371. The next prime is 16686143430431. The reversal of 16686143430386 is 68303434168661.

It can be written as a sum of positive squares in 2 ways, for example, as 14788447080625 + 1897696349761 = 3845575^2 + 1377569^2 .

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

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, 438121475 + ... + 438159558.

Almost surely, 2^{16686143430386} is an apocalyptic number.

16686143430386 is a deficient number, since it is larger than the sum of its proper divisors (8345700586858).

16686143430386 is an equidigital number, since it uses as much as digits as its factorization.

16686143430386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876290556.

The product of its (nonzero) digits is 35831808, while the sum is 59.

The spelling of 16686143430386 in words is "sixteen trillion, six hundred eighty-six billion, one hundred forty-three million, four hundred thirty thousand, three hundred eighty-six".