16678331328 has 112 divisors (see below), whose sum is σ = 47949347840. Its totient is φ = 5096908800.

The previous prime is 16678331323. The next prime is 16678331357. The reversal of 16678331328 is 82313387661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16678331323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39348 + ... + 186828.

Almost surely, 2^16678331328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16678331328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23974673920).

16678331328 is an abundant number, since it is smaller than the sum of its proper divisors (31271016512).

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

16678331328 is a wasteful number, since it uses less digits than its factorization.

16678331328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147546 (or 147536 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The spelling of 16678331328 in words is "sixteen billion, six hundred seventy-eight million, three hundred thirty-one thousand, three hundred twenty-eight".