11789388161 has 4 divisors (see below), whose sum is σ = 11791818324. Its totient is φ = 11786958000.

The previous prime is 11789388151. The next prime is 11789388179. The reversal of 11789388161 is 16188398711.

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 11117593600 + 671794561 = 105440^2 + 25919^2 .

It is a cyclic number.

It is not a de Polignac number, because 11789388161 - 2⁶ = 11789388097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11789388101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207790 + ... + 1217511.

It is an arithmetic number, because the mean of its divisors is an integer number (2947954581).

Almost surely, 2^11789388161 is an apocalyptic number.

It is an amenable number.

11789388161 is a deficient number, since it is larger than the sum of its proper divisors (2430163).

11789388161 is an equidigital number, since it uses as much as digits as its factorization.

11789388161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430162.

The product of its digits is 580608, while the sum is 53.

The spelling of 11789388161 in words is "eleven billion, seven hundred eighty-nine million, three hundred eighty-eight thousand, one hundred sixty-one".