11515011613256 has 32 divisors (see below), whose sum is σ = 22177758360000. Its totient is φ = 5600992971456.

The previous prime is 11515011613241. The next prime is 11515011613361. The reversal of 11515011613256 is 65231611051511.

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 7 ways as a sum of consecutive naturals, for example, 1302866 + ... + 4972673.

It is an arithmetic number, because the mean of its divisors is an integer number (693054948750).

Almost surely, 2^{11515011613256} is an apocalyptic number.

It is an amenable number.

11515011613256 is a deficient number, since it is larger than the sum of its proper divisors (10662746746744).

11515011613256 is a wasteful number, since it uses less digits than its factorization.

11515011613256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281781 (or 6281777 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

Adding to 11515011613256 its reverse (65231611051511), we get a palindrome (76746622664767).

The spelling of 11515011613256 in words is "eleven trillion, five hundred fifteen billion, eleven million, six hundred thirteen thousand, two hundred fifty-six".