16566829056 has 180 divisors, whose sum is σ = 48148354072. Its totient is φ = 5488902144.

The previous prime is 16566829051. The next prime is 16566829073. The reversal of 16566829056 is 65092866561.

16566829056 is a `hidden beast` number, since 1 + 6 + 566 + 8 + 29 + 0 + 56 = 666.

It is a super-2 number, since 2×16566829056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16566828993 and 16566829011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566829051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41729850 + ... + 41730246.

Almost surely, 2^16566829056 is an apocalyptic number.

16566829056 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 16566829056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24074177036).

16566829056 is an abundant number, since it is smaller than the sum of its proper divisors (31581525016).

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

16566829056 is an equidigital number, since it uses as much as digits as its factorization.

16566829056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 685 counting only the distinct ones).

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

The spelling of 16566829056 in words is "sixteen billion, five hundred sixty-six million, eight hundred twenty-nine thousand, fifty-six".