16684351682 has 24 divisors (see below), whose sum is σ = 25989941820. Its totient is φ = 8030705760.

The previous prime is 16684351681. The next prime is 16684351703. The reversal of 16684351682 is 28615348661.

It can be written as a sum of positive squares in 2 ways, for example, as 16669133881 + 15217801 = 129109^2 + 3901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16684351682.

It is not an unprimeable number, because it can be changed into a prime (16684351681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238544 + ... + 300452.

Almost surely, 2^16684351682 is an apocalyptic number.

16684351682 is a deficient number, since it is larger than the sum of its proper divisors (9305590138).

16684351682 is an equidigital number, since it uses as much as digits as its factorization.

16684351682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62066 (or 62019 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The spelling of 16684351682 in words is "sixteen billion, six hundred eighty-four million, three hundred fifty-one thousand, six hundred eighty-two".