9866331497280 has 224 divisors, whose sum is σ = 32986799314560. Its totient is φ = 2491603476480.

The previous prime is 9866331497273. The next prime is 9866331497359. The reversal of 9866331497280 is 827941336689.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48727450 + ... + 48929510.

It is an arithmetic number, because the mean of its divisors is an integer number (147262496940).

Almost surely, 2^{9866331497280} 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 9866331497280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16493399657280).

9866331497280 is an abundant number, since it is smaller than the sum of its proper divisors (23120467817280).

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

9866331497280 is a wasteful number, since it uses less digits than its factorization.

9866331497280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204777 (or 204767 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 9866331497280 in words is "nine trillion, eight hundred sixty-six billion, three hundred thirty-one million, four hundred ninety-seven thousand, two hundred eighty".