11113136633561 has 2 divisors, whose sum is σ = 11113136633562. Its totient is φ = 11113136633560.

The previous prime is 11113136633549. The next prime is 11113136633579. The reversal of 11113136633561 is 16533663131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6116995241536 + 4996141392025 = 2473256^2 + 2235205^2 .

It is a cyclic number.

It is not a de Polignac number, because 11113136633561 - 2⁶ = 11113136633497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11113136603561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556568316780 + 5556568316781.

It is an arithmetic number, because the mean of its divisors is an integer number (5556568316781).

Almost surely, 2^{11113136633561} is an apocalyptic number.

It is an amenable number.

11113136633561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11113136633561 is an equidigital number, since it uses as much as digits as its factorization.

11113136633561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

Adding to 11113136633561 its reverse (16533663131111), we get a palindrome (27646799764672).

The spelling of 11113136633561 in words is "eleven trillion, one hundred thirteen billion, one hundred thirty-six million, six hundred thirty-three thousand, five hundred sixty-one".