11938189308205 has 4 divisors (see below), whose sum is σ = 14325827169852. Its totient is φ = 9550551446560.

The previous prime is 11938189308169. The next prime is 11938189308217. The reversal of 11938189308205 is 50280398183911.

It is a happy number.

11938189308205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8794415629444 + 3143773678761 = 2965538^2 + 1773069^2 .

It is not a de Polignac number, because 11938189308205 - 2¹³ = 11938189300013 is a prime.

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 11938189308205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193818930816 + ... + 1193818930825.

It is an arithmetic number, because the mean of its divisors is an integer number (3581456792463).

Almost surely, 2^{11938189308205} is an apocalyptic number.

It is an amenable number.

11938189308205 is a deficient number, since it is larger than the sum of its proper divisors (2387637861647).

11938189308205 is an equidigital number, since it uses as much as digits as its factorization.

11938189308205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387637861646.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 11938189308205 in words is "eleven trillion, nine hundred thirty-eight billion, one hundred eighty-nine million, three hundred eight thousand, two hundred five".