16987810128 has 20 divisors (see below), whose sum is σ = 43885176288. Its totient is φ = 5662603360.

The previous prime is 16987810117. The next prime is 16987810157. The reversal of 16987810128 is 82101878961.

It is a happy number.

16987810128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176956308 + ... + 176956403.

Almost surely, 2^16987810128 is an apocalyptic number.

It is an amenable number.

16987810128 is an abundant number, since it is smaller than the sum of its proper divisors (26897366160).

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

16987810128 is a wasteful number, since it uses less digits than its factorization.

16987810128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353912722 (or 353912716 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 51.

The spelling of 16987810128 in words is "sixteen billion, nine hundred eighty-seven million, eight hundred ten thousand, one hundred twenty-eight".