16989344736 has 192 divisors, whose sum is σ = 55324459008. Its totient is φ = 4445134848.

The previous prime is 16989344731. The next prime is 16989344737. The reversal of 16989344736 is 63744398961.

It is a self number, because there is not a number n which added to its sum of digits gives 16989344736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989344731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101816 + ... + 1117128.

It is an arithmetic number, because the mean of its divisors is an integer number (288148224).

Almost surely, 2^16989344736 is an apocalyptic number.

16989344736 is a gapful number since it is divisible by the number (16) 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 16989344736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27662229504).

16989344736 is an abundant number, since it is smaller than the sum of its proper divisors (38335114272).

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

16989344736 is a wasteful number, since it uses less digits than its factorization.

16989344736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15473 (or 15465 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 60.

The spelling of 16989344736 in words is "sixteen billion, nine hundred eighty-nine million, three hundred forty-four thousand, seven hundred thirty-six".