11123345556737 has 2 divisors, whose sum is σ = 11123345556738. Its totient is φ = 11123345556736.

The previous prime is 11123345556601. The next prime is 11123345556749. The reversal of 11123345556737 is 73765554332111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9570707446336 + 1552638110401 = 3093656^2 + 1246049^2 .

It is an emirp because it is prime and its reverse (73765554332111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123345556737 - 2¹⁰ = 11123345555713 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123345556137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561672778368 + 5561672778369.

It is an arithmetic number, because the mean of its divisors is an integer number (5561672778369).

Almost surely, 2^{11123345556737} is an apocalyptic number.

It is an amenable number.

11123345556737 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123345556737 is an equidigital number, since it uses as much as digits as its factorization.

11123345556737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938000, while the sum is 53.

Adding to 11123345556737 its reverse (73765554332111), we get a palindrome (84888899888848).

The spelling of 11123345556737 in words is "eleven trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred fifty-six thousand, seven hundred thirty-seven".