9881311776 has 144 divisors (see below), whose sum is σ = 30297123360. Its totient is φ = 2811648000.

The previous prime is 9881311763. The next prime is 9881311787. The reversal of 9881311776 is 6771131889.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1176520 + ... + 1184888.

It is an arithmetic number, because the mean of its divisors is an integer number (210396690).

Almost surely, 2^9881311776 is an apocalyptic number.

9881311776 is a gapful number since it is divisible by the number (96) 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 9881311776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15148561680).

9881311776 is an abundant number, since it is smaller than the sum of its proper divisors (20415811584).

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

9881311776 is a wasteful number, since it uses less digits than its factorization.

9881311776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8647 (or 8632 counting only the distinct ones).

The product of its digits is 508032, while the sum is 51.

The square root of 9881311776 is about 99404.7874903417. The cubic root of 9881311776 is about 2145.8772102308.

The spelling of 9881311776 in words is "nine billion, eight hundred eighty-one million, three hundred eleven thousand, seven hundred seventy-six".