16455644928 has 216 divisors, whose sum is σ = 49607266800. Its totient is φ = 5239406592.

The previous prime is 16455644893. The next prime is 16455644977. The reversal of 16455644928 is 82944655461.

It is a happy number.

16455644928 is a `hidden beast` number, since 1 + 64 + 556 + 4 + 4 + 9 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6479883 + ... + 6482421.

Almost surely, 2^16455644928 is an apocalyptic number.

16455644928 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 16455644928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24803633400).

16455644928 is an abundant number, since it is smaller than the sum of its proper divisors (33151621872).

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

16455644928 is a wasteful number, since it uses less digits than its factorization.

16455644928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2670 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 16455644928 in words is "sixteen billion, four hundred fifty-five million, six hundred forty-four thousand, nine hundred twenty-eight".