9860861056 has 64 divisors (see below), whose sum is σ = 19867992480. Its totient is φ = 4874692608.

The previous prime is 9860861029. The next prime is 9860861111. The reversal of 9860861056 is 6501680689.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4961695 + ... + 4963681.

Almost surely, 2^9860861056 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 9860861056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9933996240).

9860861056 is an abundant number, since it is smaller than the sum of its proper divisors (10007131424).

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

9860861056 is a wasteful number, since it uses less digits than its factorization.

9860861056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 9860861056 is about 99301.8683409330. The cubic root of 9860861056 is about 2144.3957927504.

The spelling of 9860861056 in words is "nine billion, eight hundred sixty million, eight hundred sixty-one thousand, fifty-six".