1115166166193 has 4 divisors (see below), whose sum is σ = 1115169148788. Its totient is φ = 1115163183600.

The previous prime is 1115166166139. The next prime is 1115166166253. The reversal of 1115166166193 is 3916616615111.

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 562534500529 + 552631665664 = 750023^2 + 743392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115166166193 - 2¹⁴ = 1115166149809 is a prime.

It is a super-2 number, since 2×1115166166193² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1115166166393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833846 + ... + 1710447.

It is an arithmetic number, because the mean of its divisors is an integer number (278792287197).

Almost surely, 2^{1115166166193} is an apocalyptic number.

It is an amenable number.

1115166166193 is a deficient number, since it is larger than the sum of its proper divisors (2982595).

1115166166193 is an equidigital number, since it uses as much as digits as its factorization.

1115166166193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982594.

The product of its digits is 174960, while the sum is 47.

The spelling of 1115166166193 in words is "one trillion, one hundred fifteen billion, one hundred sixty-six million, one hundred sixty-six thousand, one hundred ninety-three".