11511243064 has 64 divisors (see below), whose sum is σ = 22812062400. Its totient is φ = 5437824000.

The previous prime is 11511243041. The next prime is 11511243071. The reversal of 11511243064 is 46034211511.

11511243064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2254114 + ... + 2259214.

It is an arithmetic number, because the mean of its divisors is an integer number (356438475).

Almost surely, 2^11511243064 is an apocalyptic number.

It is an amenable number.

11511243064 is a deficient number, since it is larger than the sum of its proper divisors (11300819336).

11511243064 is a wasteful number, since it uses less digits than its factorization.

11511243064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 11511243064 its reverse (46034211511), we get a palindrome (57545454575).

The spelling of 11511243064 in words is "eleven billion, five hundred eleven million, two hundred forty-three thousand, sixty-four".