11011010561 has 2 divisors, whose sum is σ = 11011010562. Its totient is φ = 11011010560.

The previous prime is 11011010519. The next prime is 11011010579. The reversal of 11011010561 is 16501011011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5628000400 + 5383010161 = 75020^2 + 73369^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011010561 - 2¹⁴ = 11010994177 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011910561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505505280 + 5505505281.

It is an arithmetic number, because the mean of its divisors is an integer number (5505505281).

Almost surely, 2^11011010561 is an apocalyptic number.

It is an amenable number.

11011010561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011010561 is an equidigital number, since it uses as much as digits as its factorization.

11011010561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 11011010561 its reverse (16501011011), we get a palindrome (27512021572).

The spelling of 11011010561 in words is "eleven billion, eleven million, ten thousand, five hundred sixty-one".