11185666768769 has 4 divisors (see below), whose sum is σ = 11187009755460. Its totient is φ = 11184323782080.

The previous prime is 11185666768699. The next prime is 11185666768777. The reversal of 11185666768769 is 96786766658111.

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 1126969081744 + 10058697687025 = 1061588^2 + 3171545^2 .

It is a cyclic number.

It is not a de Polignac number, because 11185666768769 - 2³² = 11181371801473 is a prime.

It is a super-2 number, since 2×11185666768769² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11185666768769.

It is not an unprimeable number, because it can be changed into a prime (11185666768789) 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, 671480852 + ... + 671497509.

It is an arithmetic number, because the mean of its divisors is an integer number (2796752438865).

Almost surely, 2^{11185666768769} is an apocalyptic number.

It is an amenable number.

11185666768769 is a deficient number, since it is larger than the sum of its proper divisors (1342986691).

11185666768769 is an equidigital number, since it uses as much as digits as its factorization.

11185666768769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342986690.

The product of its digits is 1097349120, while the sum is 77.

The spelling of 11185666768769 in words is "eleven trillion, one hundred eighty-five billion, six hundred sixty-six million, seven hundred sixty-eight thousand, seven hundred sixty-nine".