9961277870 has 16 divisors (see below), whose sum is σ = 18008602560. Its totient is φ = 3967110624.

The previous prime is 9961277869. The next prime is 9961277873. The reversal of 9961277870 is 787721699.

9961277870 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 (9961277873) 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 7 ways as a sum of consecutive naturals, for example, 2172662 + ... + 2177241.

It is an arithmetic number, because the mean of its divisors is an integer number (1125537660).

Almost surely, 2^9961277870 is an apocalyptic number.

9961277870 is a deficient number, since it is larger than the sum of its proper divisors (8047324690).

9961277870 is a wasteful number, since it uses less digits than its factorization.

9961277870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350139.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The square root of 9961277870 is about 99806.2015608249. The cubic root of 9961277870 is about 2151.6502829895.

The spelling of 9961277870 in words is "nine billion, nine hundred sixty-one million, two hundred seventy-seven thousand, eight hundred seventy".