11871351187 has 2 divisors, whose sum is σ = 11871351188. Its totient is φ = 11871351186.

The previous prime is 11871351139. The next prime is 11871351197. The reversal of 11871351187 is 78115317811.

11871351187 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 an emirp because it is prime and its reverse (78115317811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11871351187 - 2³¹ = 9723867539 is a prime.

It is not a weakly prime, because it can be changed into another prime (11871351137) 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, 5935675593 + 5935675594.

It is an arithmetic number, because the mean of its divisors is an integer number (5935675594).

Almost surely, 2^11871351187 is an apocalyptic number.

11871351187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11871351187 is an equidigital number, since it uses as much as digits as its factorization.

11871351187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 43.

Adding to 11871351187 its reverse (78115317811), we get a palindrome (89986668998).

The spelling of 11871351187 in words is "eleven billion, eight hundred seventy-one million, three hundred fifty-one thousand, one hundred eighty-seven".