9881165056 has 144 divisors (see below), whose sum is σ = 23694048000. Its totient is φ = 4020977664.

The previous prime is 9881165003. The next prime is 9881165083. The reversal of 9881165056 is 6505611889.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6140380 + ... + 6141988.

It is an arithmetic number, because the mean of its divisors is an integer number (164542000).

Almost surely, 2^9881165056 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 9881165056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11847024000).

9881165056 is an abundant number, since it is smaller than the sum of its proper divisors (13812882944).

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

9881165056 is a wasteful number, since it uses less digits than its factorization.

9881165056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 9881165056 is about 99404.0494949778. The cubic root of 9881165056 is about 2145.8665893514.

The spelling of 9881165056 in words is "nine billion, eight hundred eighty-one million, one hundred sixty-five thousand, fifty-six".