16975821684 has 24 divisors (see below), whose sum is σ = 39615505888. Its totient is φ = 5657856480.

The previous prime is 16975821637. The next prime is 16975821697. The reversal of 16975821684 is 48612857961.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4494 + ... + 184314.

Almost surely, 2^16975821684 is an apocalyptic number.

It is an amenable number.

16975821684 is an abundant number, since it is smaller than the sum of its proper divisors (22639684204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16975821684 is a wasteful number, since it uses less digits than its factorization.

16975821684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187695 (or 187693 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 16975821684 in words is "sixteen billion, nine hundred seventy-five million, eight hundred twenty-one thousand, six hundred eighty-four".