16681986528 has 48 divisors (see below), whose sum is σ = 43874396496. Its totient is φ = 5549972480.

The previous prime is 16681986527. The next prime is 16681986533. The reversal of 16681986528 is 82568918661.

16681986528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16681986523) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 116751 + ... + 216782.

It is an arithmetic number, because the mean of its divisors is an integer number (914049927).

Almost surely, 2^16681986528 is an apocalyptic number.

It is an amenable number.

16681986528 is an abundant number, since it is smaller than the sum of its proper divisors (27192409968).

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

16681986528 is a wasteful number, since it uses less digits than its factorization.

16681986528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334067 (or 334059 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 60.

The spelling of 16681986528 in words is "sixteen billion, six hundred eighty-one million, nine hundred eighty-six thousand, five hundred twenty-eight".