9865545871 has 8 divisors (see below), whose sum is σ = 10297267200. Its totient is φ = 9434056632.

The previous prime is 9865545847. The next prime is 9865545887. The reversal of 9865545871 is 1785455689.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9865545871 - 2⁷ = 9865545743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865545821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31830 + ... + 144028.

It is an arithmetic number, because the mean of its divisors is an integer number (1287158400).

Almost surely, 2^9865545871 is an apocalyptic number.

9865545871 is a deficient number, since it is larger than the sum of its proper divisors (431721329).

9865545871 is a wasteful number, since it uses less digits than its factorization.

9865545871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116045.

The product of its digits is 12096000, while the sum is 58.

The square root of 9865545871 is about 99325.4542954624. The cubic root of 9865545871 is about 2144.7353339933.

The spelling of 9865545871 in words is "nine billion, eight hundred sixty-five million, five hundred forty-five thousand, eight hundred seventy-one".