9643663712 has 96 divisors (see below), whose sum is σ = 21891189600. Its totient is φ = 4150960128.

The previous prime is 9643663699. The next prime is 9643663787. The reversal of 9643663712 is 2173663469.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283658 + ... + 315830.

It is an arithmetic number, because the mean of its divisors is an integer number (228033225).

Almost surely, 2^9643663712 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 9643663712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10945594800).

9643663712 is an abundant number, since it is smaller than the sum of its proper divisors (12247525888).

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

9643663712 is a wasteful number, since it uses less digits than its factorization.

9643663712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32248 (or 32240 counting only the distinct ones).

The product of its digits is 979776, while the sum is 47.

The square root of 9643663712 is about 98202.1573693776. The cubic root of 9643663712 is about 2128.5344611724.

The spelling of 9643663712 in words is "nine billion, six hundred forty-three million, six hundred sixty-three thousand, seven hundred twelve".