11613231561611 has 16 divisors (see below), whose sum is σ = 12260192944800. Its totient is φ = 10969867584000.

The previous prime is 11613231561599. The next prime is 11613231561629. The reversal of 11613231561611 is 11616513231611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11613231561611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11613231561641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17510525 + ... + 18161633.

It is an arithmetic number, because the mean of its divisors is an integer number (766262059050).

Almost surely, 2^{11613231561611} is an apocalyptic number.

11613231561611 is a deficient number, since it is larger than the sum of its proper divisors (646961383189).

11613231561611 is a wasteful number, since it uses less digits than its factorization.

11613231561611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653870.

The product of its digits is 19440, while the sum is 38.

The spelling of 11613231561611 in words is "eleven trillion, six hundred thirteen billion, two hundred thirty-one million, five hundred sixty-one thousand, six hundred eleven".