9961475571 has 48 divisors (see below), whose sum is σ = 14852579040. Its totient is φ = 6431040000.

The previous prime is 9961475543. The next prime is 9961475581. The reversal of 9961475571 is 1755741699.

9961475571 is a `hidden beast` number, since 9 + 9 + 61 + 4 + 7 + 5 + 571 = 666.

9961475571 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9961475571 - 2⁵ = 9961475539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9961475581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15069981 + ... + 15070641.

It is an arithmetic number, because the mean of its divisors is an integer number (309428730).

Almost surely, 2^9961475571 is an apocalyptic number.

9961475571 is a deficient number, since it is larger than the sum of its proper divisors (4891103469).

9961475571 is a wasteful number, since it uses less digits than its factorization.

9961475571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1105 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 54.

The square root of 9961475571 is about 99807.1919803378. The cubic root of 9961475571 is about 2151.6645174617.

The spelling of 9961475571 in words is "nine billion, nine hundred sixty-one million, four hundred seventy-five thousand, five hundred seventy-one".