1166500000009 has 16 divisors (see below), whose sum is σ = 1186458356160. Its totient is φ = 1146762711360.

The previous prime is 1166500000007. The next prime is 1166500000021. The reversal of 1166500000009 is 9000000056611.

It is a cyclic number.

It is not a de Polignac number, because 1166500000009 - 2¹ = 1166500000007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166500000007) 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, 5676867 + ... + 5878759.

It is an arithmetic number, because the mean of its divisors is an integer number (74153647260).

Almost surely, 2^{1166500000009} is an apocalyptic number.

It is an amenable number.

1166500000009 is a deficient number, since it is larger than the sum of its proper divisors (19958356151).

1166500000009 is a wasteful number, since it uses less digits than its factorization.

1166500000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202440.

The product of its (nonzero) digits is 1620, while the sum is 28.

The spelling of 1166500000009 in words is "one trillion, one hundred sixty-six billion, five hundred million, nine", and thus it is an aban number.