11113444456657 has 2 divisors, whose sum is σ = 11113444456658. Its totient is φ = 11113444456656.

The previous prime is 11113444456651. The next prime is 11113444456661. The reversal of 11113444456657 is 75665444431111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10537061335056 + 576383121601 = 3246084^2 + 759199^2 .

It is an emirp because it is prime and its reverse (75665444431111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11113444456657 - 2¹⁹ = 11113443932369 is a prime.

It is not a weakly prime, because it can be changed into another prime (11113444456651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556722228328 + 5556722228329.

It is an arithmetic number, because the mean of its divisors is an integer number (5556722228329).

Almost surely, 2^{11113444456657} is an apocalyptic number.

It is an amenable number.

11113444456657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11113444456657 is an equidigital number, since it uses as much as digits as its factorization.

11113444456657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 52.

Adding to 11113444456657 its reverse (75665444431111), we get a palindrome (86778888887768).

The spelling of 11113444456657 in words is "eleven trillion, one hundred thirteen billion, four hundred forty-four million, four hundred fifty-six thousand, six hundred fifty-seven".