16881639376 has 40 divisors (see below), whose sum is σ = 37387785600. Its totient is φ = 7233631104.

The previous prime is 16881639371. The next prime is 16881639391. The reversal of 16881639376 is 67393618861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16881639376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16881639371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787650 + ... + 808798.

It is an arithmetic number, because the mean of its divisors is an integer number (934694640).

Almost surely, 2^16881639376 is an apocalyptic number.

16881639376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16881639376 is an abundant number, since it is smaller than the sum of its proper divisors (20506146224).

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

16881639376 is a wasteful number, since it uses less digits than its factorization.

16881639376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28291 (or 28285 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 16881639376 in words is "sixteen billion, eight hundred eighty-one million, six hundred thirty-nine thousand, three hundred seventy-six".