16560639216 has 400 divisors, whose sum is σ = 57791086848. Its totient is φ = 4516300800.

The previous prime is 16560639197. The next prime is 16560639217. The reversal of 16560639216 is 61293606561.

16560639216 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 0 + 639 + 2 + 1 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16560639217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5572611 + ... + 5575581.

Almost surely, 2^16560639216 is an apocalyptic number.

16560639216 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 16560639216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28895543424).

16560639216 is an abundant number, since it is smaller than the sum of its proper divisors (41230447632).

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

16560639216 is a wasteful number, since it uses less digits than its factorization.

16560639216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042 (or 3027 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 16560639216 in words is "sixteen billion, five hundred sixty million, six hundred thirty-nine thousand, two hundred sixteen".