16545005568 has 600 divisors, whose sum is σ = 61280056992. Its totient is φ = 4331667456.

The previous prime is 16545005483. The next prime is 16545005597. The reversal of 16545005568 is 86550054561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 120766396 + ... + 120766532.

Almost surely, 2^16545005568 is an apocalyptic number.

16545005568 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 16545005568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30640028496).

16545005568 is an abundant number, since it is smaller than the sum of its proper divisors (44735051424).

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

16545005568 is an equidigital number, since it uses as much as digits as its factorization.

16545005568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 16545005568 in words is "sixteen billion, five hundred forty-five million, five thousand, five hundred sixty-eight".