16600880640 has 320 divisors, whose sum is σ = 57805228800. Its totient is φ = 4048257024.

The previous prime is 16600880623. The next prime is 16600880641. The reversal of 16600880640 is 4608800661.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16600880641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4229719 + ... + 4233641.

It is an arithmetic number, because the mean of its divisors is an integer number (180641340).

Almost surely, 2^16600880640 is an apocalyptic number.

16600880640 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 16600880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28902614400).

16600880640 is an abundant number, since it is smaller than the sum of its proper divisors (41204348160).

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

16600880640 is a wasteful number, since it uses less digits than its factorization.

16600880640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997 (or 3981 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 16600880640 in words is "sixteen billion, six hundred million, eight hundred eighty thousand, six hundred forty".