16280513568 has 384 divisors, whose sum is σ = 54867456000. Its totient is φ = 4648089600.

The previous prime is 16280513563. The next prime is 16280513569. The reversal of 16280513568 is 86531508261.

16280513568 is a `hidden beast` number, since 1 + 6 + 2 + 80 + 5 + 1 + 3 + 568 = 666.

It is not an unprimeable number, because it can be changed into a prime (16280513563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15519508 + ... + 15520556.

It is an arithmetic number, because the mean of its divisors is an integer number (142884000).

Almost surely, 2^16280513568 is an apocalyptic number.

16280513568 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 16280513568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27433728000).

16280513568 is an abundant number, since it is smaller than the sum of its proper divisors (38586942432).

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

16280513568 is a wasteful number, since it uses less digits than its factorization.

16280513568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 16280513568 in words is "sixteen billion, two hundred eighty million, five hundred thirteen thousand, five hundred sixty-eight".