9963445872 has 80 divisors (see below), whose sum is σ = 27436736000. Its totient is φ = 3106501632.

The previous prime is 9963445841. The next prime is 9963445873. The reversal of 9963445872 is 2785443699.

9963445872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9963445873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2904 + ... + 141192.

It is an arithmetic number, because the mean of its divisors is an integer number (342959200).

Almost surely, 2^9963445872 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 9963445872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13718368000).

9963445872 is an abundant number, since it is smaller than the sum of its proper divisors (17473290128).

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

9963445872 is a wasteful number, since it uses less digits than its factorization.

9963445872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138398 (or 138392 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The square root of 9963445872 is about 99817.0620284929. The cubic root of 9963445872 is about 2151.8063688451.

The spelling of 9963445872 in words is "nine billion, nine hundred sixty-three million, four hundred forty-five thousand, eight hundred seventy-two".