11011575068261 has 2 divisors, whose sum is σ = 11011575068262. Its totient is φ = 11011575068260.

The previous prime is 11011575068257. The next prime is 11011575068309. The reversal of 11011575068261 is 16286057511011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6412720552225 + 4598854516036 = 2532335^2 + 2144494^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011575068261 - 2² = 11011575068257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011575068231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505787534130 + 5505787534131.

It is an arithmetic number, because the mean of its divisors is an integer number (5505787534131).

Almost surely, 2^{11011575068261} is an apocalyptic number.

It is an amenable number.

11011575068261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011575068261 is an equidigital number, since it uses as much as digits as its factorization.

11011575068261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 44.

The spelling of 11011575068261 in words is "eleven trillion, eleven billion, five hundred seventy-five million, sixty-eight thousand, two hundred sixty-one".