9611889785672 has 32 divisors (see below), whose sum is σ = 19625001840000. Its totient is φ = 4396000408128.

The previous prime is 9611889785651. The next prime is 9611889785689. The reversal of 9611889785672 is 2765879881169.

It is a junction number, because it is equal to n+sod(n) for n = 9611889785593 and 9611889785602.

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 7 ways as a sum of consecutive naturals, for example, 1090273472 + ... + 1090282287.

It is an arithmetic number, because the mean of its divisors is an integer number (613281307500).

Almost surely, 2^{9611889785672} is an apocalyptic number.

It is an amenable number.

9611889785672 is an abundant number, since it is smaller than the sum of its proper divisors (10013112054328).

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

9611889785672 is a wasteful number, since it uses less digits than its factorization.

9611889785672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180555813 (or 2180555809 counting only the distinct ones).

The product of its digits is 731566080, while the sum is 77.

The spelling of 9611889785672 in words is "nine trillion, six hundred eleven billion, eight hundred eighty-nine million, seven hundred eighty-five thousand, six hundred seventy-two".