9879578571 has 16 divisors (see below), whose sum is σ = 13536679968. Its totient is φ = 6405446400.

The previous prime is 9879578537. The next prime is 9879578581. The reversal of 9879578571 is 1758759789.

It is not a de Polignac number, because 9879578571 - 2¹⁵ = 9879545803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9879578531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87700 + ... + 165681.

It is an arithmetic number, because the mean of its divisors is an integer number (846042498).

Almost surely, 2^9879578571 is an apocalyptic number.

9879578571 is a deficient number, since it is larger than the sum of its proper divisors (3657101397).

9879578571 is a wasteful number, since it uses less digits than its factorization.

9879578571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253742.

The product of its digits is 44452800, while the sum is 66.

The square root of 9879578571 is about 99396.0691929012. The cubic root of 9879578571 is about 2145.7517389482.

The spelling of 9879578571 in words is "nine billion, eight hundred seventy-nine million, five hundred seventy-eight thousand, five hundred seventy-one".