9955131966 has 96 divisors (see below), whose sum is σ = 25889703840. Its totient is φ = 2731180032.

The previous prime is 9955131961. The next prime is 9955132003. The reversal of 9955131966 is 6691315599.

It is a happy number.

9955131966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955131961) 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 47 ways as a sum of consecutive naturals, for example, 9726 + ... + 141438.

It is an arithmetic number, because the mean of its divisors is an integer number (269684415).

Almost surely, 2^9955131966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9955131966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12944851920).

9955131966 is an abundant number, since it is smaller than the sum of its proper divisors (15934571874).

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

9955131966 is a wasteful number, since it uses less digits than its factorization.

9955131966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131770 (or 131767 counting only the distinct ones).

The product of its digits is 1968300, while the sum is 54.

The square root of 9955131966 is about 99775.4076213172. The cubic root of 9955131966 is about 2151.2076839308.

The spelling of 9955131966 in words is "nine billion, nine hundred fifty-five million, one hundred thirty-one thousand, nine hundred sixty-six".