11130005681 has 2 divisors, whose sum is σ = 11130005682. Its totient is φ = 11130005680.

The previous prime is 11130005603. The next prime is 11130005707. The reversal of 11130005681 is 18650003111.

11130005681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11130005707) can be obtained adding 11130005681 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5686517281 + 5443488400 = 75409^2 + 73780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11130005681 is a prime.

It is a super-2 number, since 2×11130005681² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11130005681.

It is not a weakly prime, because it can be changed into another prime (11130005581) by changing a digit.

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 as a sum of consecutive naturals, namely, 5565002840 + 5565002841.

It is an arithmetic number, because the mean of its divisors is an integer number (5565002841).

Almost surely, 2^11130005681 is an apocalyptic number.

It is an amenable number.

11130005681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11130005681 is an equidigital number, since it uses as much as digits as its factorization.

11130005681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 11130005681 its reverse (18650003111), we get a palindrome (29780008792).

The spelling of 11130005681 in words is "eleven billion, one hundred thirty million, five thousand, six hundred eighty-one".