9879265872 has 160 divisors (see below), whose sum is σ = 32478080000. Its totient is φ = 2816560512.

The previous prime is 9879265849. The next prime is 9879266057. The reversal of 9879265872 is 2785629789.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1505703 + ... + 1512249.

It is an arithmetic number, because the mean of its divisors is an integer number (202988000).

Almost surely, 2^9879265872 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 9879265872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16239040000).

9879265872 is an abundant number, since it is smaller than the sum of its proper divisors (22598814128).

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

9879265872 is a wasteful number, since it uses less digits than its factorization.

9879265872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070 (or 7058 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 9879265872 is about 99394.4961856541. The cubic root of 9879265872 is about 2145.7291002801.

The spelling of 9879265872 in words is "nine billion, eight hundred seventy-nine million, two hundred sixty-five thousand, eight hundred seventy-two".