11511243063 has 12 divisors (see below), whose sum is σ = 16640267280. Its totient is φ = 7668200736.

The previous prime is 11511243041. The next prime is 11511243071. The reversal of 11511243063 is 36034211511.

It is a happy number.

11511243063 is a `hidden beast` number, since 115 + 112 + 430 + 6 + 3 = 666.

It is not a de Polignac number, because 11511243063 - 2¹⁶ = 11511177527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511243013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484531 + ... + 507732.

It is an arithmetic number, because the mean of its divisors is an integer number (1386688940).

Almost surely, 2^11511243063 is an apocalyptic number.

11511243063 is a deficient number, since it is larger than the sum of its proper divisors (5129024217).

11511243063 is a wasteful number, since it uses less digits than its factorization.

11511243063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993558 (or 993555 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 11511243063 its reverse (36034211511), we get a palindrome (47545454574).

The spelling of 11511243063 in words is "eleven billion, five hundred eleven million, two hundred forty-three thousand, sixty-three".