1166116500109 has 8 divisors (see below), whose sum is σ = 1278584591328. Its totient is φ = 1054724658960.

The previous prime is 1166116500091. The next prime is 1166116500167. The reversal of 1166116500109 is 9010056116611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166116500109 - 2¹⁹ = 1166115975821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166116510109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269060247 + ... + 269064580.

It is an arithmetic number, because the mean of its divisors is an integer number (159823073916).

Almost surely, 2^{1166116500109} is an apocalyptic number.

It is an amenable number.

1166116500109 is a deficient number, since it is larger than the sum of its proper divisors (112468091219).

1166116500109 is a wasteful number, since it uses less digits than its factorization.

1166116500109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538125035.

The product of its (nonzero) digits is 9720, while the sum is 37.

It can be divided in two parts, 1166116 and 500109, that added together give a triangular number (1666225 = T₁₈₂₅).

The spelling of 1166116500109 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, five hundred thousand, one hundred nine".