11158381771 has 4 divisors (see below), whose sum is σ = 11158651600. Its totient is φ = 11158111944.

The previous prime is 11158381757. The next prime is 11158381811. The reversal of 11158381771 is 17718385111.

11158381771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17718385111 = 7 ⋅2531197873.

It is a cyclic number.

It is not a de Polignac number, because 11158381771 - 2⁵ = 11158381739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11158381721) 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 in 3 ways as a sum of consecutive naturals, for example, 58431 + ... + 160408.

It is an arithmetic number, because the mean of its divisors is an integer number (2789662900).

Almost surely, 2^11158381771 is an apocalyptic number.

11158381771 is a deficient number, since it is larger than the sum of its proper divisors (269829).

11158381771 is an equidigital number, since it uses as much as digits as its factorization.

11158381771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269828.

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

The spelling of 11158381771 in words is "eleven billion, one hundred fifty-eight million, three hundred eighty-one thousand, seven hundred seventy-one".