16989536831328 has 240 divisors, whose sum is σ = 51701823558000. Its totient is φ = 5466510056448.

The previous prime is 16989536831261. The next prime is 16989536831341. The reversal of 16989536831328 is 82313863598961.

16989536831328 is a `hidden beast` number, since 1 + 6 + 9 + 8 + 9 + 536 + 83 + 1 + 3 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 320113978 + ... + 320167046.

It is an arithmetic number, because the mean of its divisors is an integer number (215424264825).

Almost surely, 2^{16989536831328} is an apocalyptic number.

16989536831328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16989536831328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25850911779000).

16989536831328 is an abundant number, since it is smaller than the sum of its proper divisors (34712286726672).

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

16989536831328 is a wasteful number, since it uses less digits than its factorization.

16989536831328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57379 (or 57362 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 72.

The spelling of 16989536831328 in words is "sixteen trillion, nine hundred eighty-nine billion, five hundred thirty-six million, eight hundred thirty-one thousand, three hundred twenty-eight".