11556232271 has 2 divisors, whose sum is σ = 11556232272. Its totient is φ = 11556232270.

The previous prime is 11556232253. The next prime is 11556232277. The reversal of 11556232271 is 17223265511.

11556232271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11556232271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11556232277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778116135 + 5778116136.

It is an arithmetic number, because the mean of its divisors is an integer number (5778116136).

Almost surely, 2^11556232271 is an apocalyptic number.

11556232271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11556232271 is an equidigital number, since it uses as much as digits as its factorization.

11556232271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

Adding to 11556232271 its reverse (17223265511), we get a palindrome (28779497782).

The spelling of 11556232271 in words is "eleven billion, five hundred fifty-six million, two hundred thirty-two thousand, two hundred seventy-one".