9855887564 has 12 divisors (see below), whose sum is σ = 18262380024. Its totient is φ = 4638064704.

The previous prime is 9855887557. The next prime is 9855887599. The reversal of 9855887564 is 4657885589.

9855887564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9855887564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72469694 + ... + 72469829.

It is an arithmetic number, because the mean of its divisors is an integer number (1521865002).

Almost surely, 2^9855887564 is an apocalyptic number.

It is an amenable number.

9855887564 is a deficient number, since it is larger than the sum of its proper divisors (8406492460).

9855887564 is a wasteful number, since it uses less digits than its factorization.

9855887564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144939544 (or 144939542 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 65.

The square root of 9855887564 is about 99276.8228943695. The cubic root of 9855887564 is about 2144.0352113634.

The spelling of 9855887564 in words is "nine billion, eight hundred fifty-five million, eight hundred eighty-seven thousand, five hundred sixty-four".