11776408169 has 2 divisors, whose sum is σ = 11776408170. Its totient is φ = 11776408168.

The previous prime is 11776408159. The next prime is 11776408207. The reversal of 11776408169 is 96180467711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9334071769 + 2442336400 = 96613^2 + 49420^2 .

It is an emirp because it is prime and its reverse (96180467711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11776408169 - 2²⁸ = 11507972713 is a prime.

It is a super-2 number, since 2×11776408169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11776408129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5888204084 + 5888204085.

It is an arithmetic number, because the mean of its divisors is an integer number (5888204085).

Almost surely, 2^11776408169 is an apocalyptic number.

It is an amenable number.

11776408169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11776408169 is an equidigital number, since it uses as much as digits as its factorization.

11776408169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 11776408169 in words is "eleven billion, seven hundred seventy-six million, four hundred eight thousand, one hundred sixty-nine".