11155204657 has 2 divisors, whose sum is σ = 11155204658. Its totient is φ = 11155204656.

The previous prime is 11155204637. The next prime is 11155204673. The reversal of 11155204657 is 75640255111.

11155204657 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 can be written as a sum of positive squares in only one way, i.e., 11107262881 + 47941776 = 105391^2 + 6924^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155204657 - 2¹¹ = 11155202609 is a prime.

It is not a weakly prime, because it can be changed into another prime (11155204637) 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, 5577602328 + 5577602329.

It is an arithmetic number, because the mean of its divisors is an integer number (5577602329).

Almost surely, 2^11155204657 is an apocalyptic number.

It is an amenable number.

11155204657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155204657 is an equidigital number, since it uses as much as digits as its factorization.

11155204657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 37.

Adding to 11155204657 its reverse (75640255111), we get a palindrome (86795459768).

The spelling of 11155204657 in words is "eleven billion, one hundred fifty-five million, two hundred four thousand, six hundred fifty-seven".