1166611115113 has 4 divisors (see below), whose sum is σ = 1167414014788. Its totient is φ = 1165808215440.

The previous prime is 1166611115083. The next prime is 1166611115167. The reversal of 1166611115113 is 3115111166611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 867267537984 + 299343577129 = 931272^2 + 547123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166611115113 - 2¹⁷ = 1166610984041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166611112113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 401447658 + ... + 401450563.

It is an arithmetic number, because the mean of its divisors is an integer number (291853503697).

Almost surely, 2^{1166611115113} is an apocalyptic number.

It is an amenable number.

1166611115113 is a deficient number, since it is larger than the sum of its proper divisors (802899675).

1166611115113 is an equidigital number, since it uses as much as digits as its factorization.

1166611115113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802899674.

The product of its digits is 3240, while the sum is 34.

The spelling of 1166611115113 in words is "one trillion, one hundred sixty-six billion, six hundred eleven million, one hundred fifteen thousand, one hundred thirteen".