16005606720 has 112 divisors (see below), whose sum is σ = 51311495040. Its totient is φ = 4226697216.

The previous prime is 16005606713. The next prime is 16005606737. The reversal of 16005606720 is 2760650061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17946 + ... + 179814.

Almost surely, 2^16005606720 is an apocalyptic number.

16005606720 is a gapful number since it is divisible by the number (10) 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 16005606720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25655747520).

16005606720 is an abundant number, since it is smaller than the sum of its proper divisors (35305888320).

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

16005606720 is a wasteful number, since it uses less digits than its factorization.

16005606720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161992 (or 161982 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 16005606720 in words is "sixteen billion, five million, six hundred six thousand, seven hundred twenty".