9875571720 has 384 divisors, whose sum is σ = 35369913600. Its totient is φ = 2198913024.

The previous prime is 9875571703. The next prime is 9875571733. The reversal of 9875571720 is 271755789.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59135077 + ... + 59135243.

It is an arithmetic number, because the mean of its divisors is an integer number (92109150).

Almost surely, 2^9875571720 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 9875571720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17684956800).

9875571720 is an abundant number, since it is smaller than the sum of its proper divisors (25494341880).

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

9875571720 is a wasteful number, since it uses less digits than its factorization.

9875571720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 51.

The square root of 9875571720 is about 99375.9111656341. The cubic root of 9875571720 is about 2145.4616162464.

The spelling of 9875571720 in words is "nine billion, eight hundred seventy-five million, five hundred seventy-one thousand, seven hundred twenty".