11511173151 has 6 divisors (see below), whose sum is σ = 16627250120. Its totient is φ = 7674115428.

The previous prime is 11511173117. The next prime is 11511173159. The reversal of 11511173151 is 15137111511.

11511173151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11511173151 - 2²¹ = 11509075999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511173159) 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 5 ways as a sum of consecutive naturals, for example, 639509611 + ... + 639509628.

Almost surely, 2^11511173151 is an apocalyptic number.

11511173151 is a deficient number, since it is larger than the sum of its proper divisors (5116076969).

11511173151 is a wasteful number, since it uses less digits than its factorization.

11511173151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279019245 (or 1279019242 counting only the distinct ones).

The product of its digits is 525, while the sum is 27.

Adding to 11511173151 its reverse (15137111511), we get a palindrome (26648284662).

The spelling of 11511173151 in words is "eleven billion, five hundred eleven million, one hundred seventy-three thousand, one hundred fifty-one".