11155413187 has 2 divisors, whose sum is σ = 11155413188. Its totient is φ = 11155413186.

The previous prime is 11155413131. The next prime is 11155413197. The reversal of 11155413187 is 78131455111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11155413187 - 2¹¹ = 11155411139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11155413197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577706593 + 5577706594.

It is an arithmetic number, because the mean of its divisors is an integer number (5577706594).

Almost surely, 2^11155413187 is an apocalyptic number.

11155413187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155413187 is an equidigital number, since it uses as much as digits as its factorization.

11155413187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 37.

Adding to 11155413187 its reverse (78131455111), we get a palindrome (89286868298).

It can be divided in two parts, 11155413 and 187, that added together give a square (11155600 = 3340²).

The spelling of 11155413187 in words is "eleven billion, one hundred fifty-five million, four hundred thirteen thousand, one hundred eighty-seven".