9868257855 has 24 divisors (see below), whose sum is σ = 17114940960. Its totient is φ = 5260006080.

The previous prime is 9868257853. The next prime is 9868257857. The reversal of 9868257855 is 5587528689.

9868257855 is a `hidden beast` number, since 9 + 8 + 6 + 8 + 2 + 578 + 55 = 666.

9868257855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9868257853) and next prime (9868257857).

It is not a de Polignac number, because 9868257855 - 2¹ = 9868257853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9868257792 and 9868257801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9868257853) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15366 + ... + 141324.

It is an arithmetic number, because the mean of its divisors is an integer number (713122540).

Almost surely, 2^9868257855 is an apocalyptic number.

9868257855 is a deficient number, since it is larger than the sum of its proper divisors (7246683105).

9868257855 is a wasteful number, since it uses less digits than its factorization.

9868257855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127711 (or 127708 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 63.

The square root of 9868257855 is about 99339.1053664165. The cubic root of 9868257855 is about 2144.9318412822.

The spelling of 9868257855 in words is "nine billion, eight hundred sixty-eight million, two hundred fifty-seven thousand, eight hundred fifty-five".