11571105720011 has 2 divisors, whose sum is σ = 11571105720012. Its totient is φ = 11571105720010.

The previous prime is 11571105719977. The next prime is 11571105720019. The reversal of 11571105720011 is 11002750117511.

11571105720011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (11002750117511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11571105720011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11571105720011.

It is not a weakly prime, because it can be changed into another prime (11571105720019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5785552860005 + 5785552860006.

It is an arithmetic number, because the mean of its divisors is an integer number (5785552860006).

Almost surely, 2^{11571105720011} is an apocalyptic number.

11571105720011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11571105720011 is an equidigital number, since it uses as much as digits as its factorization.

11571105720011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 32.

Adding to 11571105720011 its reverse (11002750117511), we get a palindrome (22573855837522).

The spelling of 11571105720011 in words is "eleven trillion, five hundred seventy-one billion, one hundred five million, seven hundred twenty thousand, eleven".