16989578892 has 288 divisors, whose sum is σ = 53892034560. Its totient is φ = 4439232000.

The previous prime is 16989578867. The next prime is 16989578911. The reversal of 16989578892 is 29887598961.

16989578892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16989578892.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4626217 + ... + 4629887.

It is an arithmetic number, because the mean of its divisors is an integer number (187125120).

Almost surely, 2^16989578892 is an apocalyptic number.

16989578892 is a gapful number since it is divisible by the number (12) 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 16989578892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26946017280).

16989578892 is an abundant number, since it is smaller than the sum of its proper divisors (36902455668).

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

16989578892 is a wasteful number, since it uses less digits than its factorization.

16989578892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765 (or 3760 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 72.

The spelling of 16989578892 in words is "sixteen billion, nine hundred eighty-nine million, five hundred seventy-eight thousand, eight hundred ninety-two".