9947357680 has 160 divisors (see below), whose sum is σ = 25845845760. Its totient is φ = 3536732160.

The previous prime is 9947357669. The next prime is 9947357683. The reversal of 9947357680 is 867537499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947357683) 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, 3367084 + ... + 3370036.

It is an arithmetic number, because the mean of its divisors is an integer number (161536536).

Almost surely, 2^9947357680 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 9947357680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12922922880).

9947357680 is an abundant number, since it is smaller than the sum of its proper divisors (15898488080).

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

9947357680 is a wasteful number, since it uses less digits than its factorization.

9947357680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 58.

The square root of 9947357680 is about 99736.4410834876. The cubic root of 9947357680 is about 2150.6475554399.

The spelling of 9947357680 in words is "nine billion, nine hundred forty-seven million, three hundred fifty-seven thousand, six hundred eighty".