9857311056 has 240 divisors, whose sum is σ = 29517396480. Its totient is φ = 3065610240.

The previous prime is 9857311021. The next prime is 9857311067. The reversal of 9857311056 is 6501137589.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17083440 + ... + 17084016.

It is an arithmetic number, because the mean of its divisors is an integer number (122989152).

Almost surely, 2^9857311056 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 9857311056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14758698240).

9857311056 is an abundant number, since it is smaller than the sum of its proper divisors (19660085424).

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

9857311056 is a wasteful number, since it uses less digits than its factorization.

9857311056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 9857311056 is about 99283.9919423066. The cubic root of 9857311056 is about 2144.1384278428.

The spelling of 9857311056 in words is "nine billion, eight hundred fifty-seven million, three hundred eleven thousand, fifty-six".