9666808980 has 192 divisors, whose sum is σ = 29281996800. Its totient is φ = 2375308800.

The previous prime is 9666808919. The next prime is 9666808981. The reversal of 9666808980 is 898086669.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666808981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6792549 + ... + 6793971.

It is an arithmetic number, because the mean of its divisors is an integer number (152510400).

Almost surely, 2^9666808980 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 9666808980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14640998400).

9666808980 is an abundant number, since it is smaller than the sum of its proper divisors (19615187820).

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

9666808980 is a wasteful number, since it uses less digits than its factorization.

9666808980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 60.

The square root of 9666808980 is about 98319.9317534344. The cubic root of 9666808980 is about 2130.2359631908.

The spelling of 9666808980 in words is "nine billion, six hundred sixty-six million, eight hundred eight thousand, nine hundred eighty".