9611686321 has 16 divisors (see below), whose sum is σ = 10238332608. Its totient is φ = 8992000000.

The previous prime is 9611686303. The next prime is 9611686333. The reversal of 9611686321 is 1236861169.

It is a cyclic number.

It is not a de Polignac number, because 9611686321 - 2⁵ = 9611686289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9611656321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2400321 + ... + 2404321.

It is an arithmetic number, because the mean of its divisors is an integer number (639895788).

Almost surely, 2^9611686321 is an apocalyptic number.

It is an amenable number.

9611686321 is a deficient number, since it is larger than the sum of its proper divisors (626646287).

9611686321 is a wasteful number, since it uses less digits than its factorization.

9611686321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832.

The product of its digits is 93312, while the sum is 43.

The square root of 9611686321 is about 98039.2080802370. The cubic root of 9611686321 is about 2126.1791892967.

The spelling of 9611686321 in words is "nine billion, six hundred eleven million, six hundred eighty-six thousand, three hundred twenty-one".