16438824688 has 60 divisors (see below), whose sum is σ = 37624107528. Its totient is φ = 6897396480.

The previous prime is 16438824671. The next prime is 16438824733. The reversal of 16438824688 is 88642883461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246595 + ... + 306082.

Almost surely, 2^16438824688 is an apocalyptic number.

It is an amenable number.

16438824688 is an abundant number, since it is smaller than the sum of its proper divisors (21185282840).

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

16438824688 is a wasteful number, since it uses less digits than its factorization.

16438824688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552722 (or 552703 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 58.

The spelling of 16438824688 in words is "sixteen billion, four hundred thirty-eight million, eight hundred twenty-four thousand, six hundred eighty-eight".