9958771712 has 44 divisors (see below), whose sum is σ = 20101310736. Its totient is φ = 4930990080.

The previous prime is 9958771703. The next prime is 9958771723. The reversal of 9958771712 is 2171778599.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58262 + ... + 152682.

Almost surely, 2^9958771712 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 9958771712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10050655368).

9958771712 is an abundant number, since it is smaller than the sum of its proper divisors (10142539024).

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

9958771712 is a wasteful number, since it uses less digits than its factorization.

9958771712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94544 (or 94526 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 56.

The square root of 9958771712 is about 99793.6456494100. The cubic root of 9958771712 is about 2151.4698232825.

The spelling of 9958771712 in words is "nine billion, nine hundred fifty-eight million, seven hundred seventy-one thousand, seven hundred twelve".