16989631344 has 120 divisors (see below), whose sum is σ = 56092854272. Its totient is φ = 4697585280.

The previous prime is 16989631333. The next prime is 16989631349. The reversal of 16989631344 is 44313698961.

16989631344 is a `hidden beast` number, since 169 + 89 + 63 + 1 + 344 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989631349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240604 + ... + 303099.

Almost surely, 2^16989631344 is an apocalyptic number.

16989631344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16989631344 is an abundant number, since it is smaller than the sum of its proper divisors (39103222928).

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

16989631344 is a wasteful number, since it uses less digits than its factorization.

16989631344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543755 (or 543746 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 16989631344 in words is "sixteen billion, nine hundred eighty-nine million, six hundred thirty-one thousand, three hundred forty-four".