11515663306413 has 24 divisors (see below), whose sum is σ = 19332186993600. Its totient is φ = 6468847182144.

The previous prime is 11515663306369. The next prime is 11515663306439. The reversal of 11515663306413 is 31460336651511.

11515663306413 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 5 + 6 + 633 + 0 + 6 + 4 + 1 + 3 = 666.

11515663306413 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 11515663306413 - 2²⁴ = 11515646529197 is a prime.

It is a super-2 number, since 2×11515663306413² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515663306453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549049728 + ... + 1549057161.

It is an arithmetic number, because the mean of its divisors is an integer number (805507791400).

Almost surely, 2^{11515663306413} is an apocalyptic number.

It is an amenable number.

11515663306413 is a deficient number, since it is larger than the sum of its proper divisors (7816523687187).

11515663306413 is a wasteful number, since it uses less digits than its factorization.

11515663306413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098106961 (or 3098106958 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

Adding to 11515663306413 its reverse (31460336651511), we get a palindrome (42975999957924).

The spelling of 11515663306413 in words is "eleven trillion, five hundred fifteen billion, six hundred sixty-three million, three hundred six thousand, four hundred thirteen".