9961730650 has 24 divisors (see below), whose sum is σ = 19126525824. Its totient is φ = 3856153200.

The previous prime is 9961730641. The next prime is 9961730651. The reversal of 9961730650 is 560371699.

9961730650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9961730650.

It is not an unprimeable number, because it can be changed into a prime (9961730651) 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 11 ways as a sum of consecutive naturals, for example, 3211912 + ... + 3215011.

It is an arithmetic number, because the mean of its divisors is an integer number (796938576).

Almost surely, 2^9961730650 is an apocalyptic number.

9961730650 is a deficient number, since it is larger than the sum of its proper divisors (9164795174).

9961730650 is a wasteful number, since it uses less digits than its factorization.

9961730650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426966 (or 6426961 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 9961730650 is about 99808.4698309718. The cubic root of 9961730650 is about 2151.6828828717.

The spelling of 9961730650 in words is "nine billion, nine hundred sixty-one million, seven hundred thirty thousand, six hundred fifty".