9661179185885 has 16 divisors (see below), whose sum is σ = 11905498305792. Its totient is φ = 7522704907200.

The previous prime is 9661179185869. The next prime is 9661179185909. The reversal of 9661179185885 is 5885819711669.

It is not a de Polignac number, because 9661179185885 - 2⁴ = 9661179185869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113524871 + ... + 113609940.

It is an arithmetic number, because the mean of its divisors is an integer number (744093644112).

Almost surely, 2^{9661179185885} is an apocalyptic number.

It is an amenable number.

9661179185885 is a deficient number, since it is larger than the sum of its proper divisors (2244319119907).

9661179185885 is a wasteful number, since it uses less digits than its factorization.

9661179185885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227135044.

The product of its digits is 261273600, while the sum is 74.

The spelling of 9661179185885 in words is "nine trillion, six hundred sixty-one billion, one hundred seventy-nine million, one hundred eighty-five thousand, eight hundred eighty-five".