11691211327 has 2 divisors, whose sum is σ = 11691211328. Its totient is φ = 11691211326.

The previous prime is 11691211291. The next prime is 11691211339. The reversal of 11691211327 is 72311219611.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72311219611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11691211327 - 2¹⁹ = 11690687039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11691211292 and 11691211301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11694211327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5845605663 + 5845605664.

It is an arithmetic number, because the mean of its divisors is an integer number (5845605664).

Almost surely, 2^11691211327 is an apocalyptic number.

11691211327 is a deficient number, since it is larger than the sum of its proper divisors (1).

11691211327 is an equidigital number, since it uses as much as digits as its factorization.

11691211327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 34.

The spelling of 11691211327 in words is "eleven billion, six hundred ninety-one million, two hundred eleven thousand, three hundred twenty-seven".