16560829656 has 192 divisors, whose sum is σ = 53578137600. Its totient is φ = 4518353664.

The previous prime is 16560829589. The next prime is 16560829661. The reversal of 16560829656 is 65692806561.

16560829656 is a `hidden beast` number, since 1 + 6 + 5 + 608 + 29 + 6 + 5 + 6 = 666.

It is a super-2 number, since 2×16560829656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12947625 + ... + 12948903.

It is an arithmetic number, because the mean of its divisors is an integer number (279052800).

Almost surely, 2^16560829656 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 16560829656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26789068800).

16560829656 is an abundant number, since it is smaller than the sum of its proper divisors (37017307944).

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

16560829656 is a wasteful number, since it uses less digits than its factorization.

16560829656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 2431 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 16560829656 in words is "sixteen billion, five hundred sixty million, eight hundred twenty-nine thousand, six hundred fifty-six".