11816188693 has 2 divisors, whose sum is σ = 11816188694. Its totient is φ = 11816188692.

The previous prime is 11816188669. The next prime is 11816188697. The reversal of 11816188693 is 39688161811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10340245969 + 1475942724 = 101687^2 + 38418^2 .

It is a cyclic number.

It is not a de Polignac number, because 11816188693 - 2²⁹ = 11279317781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11816188693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11816188697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908094346 + 5908094347.

It is an arithmetic number, because the mean of its divisors is an integer number (5908094347).

Almost surely, 2^11816188693 is an apocalyptic number.

It is an amenable number.

11816188693 is a deficient number, since it is larger than the sum of its proper divisors (1).

11816188693 is an equidigital number, since it uses as much as digits as its factorization.

11816188693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 52.

The spelling of 11816188693 in words is "eleven billion, eight hundred sixteen million, one hundred eighty-eight thousand, six hundred ninety-three".