11223345566789 has 2 divisors, whose sum is σ = 11223345566790. Its totient is φ = 11223345566788.

The previous prime is 11223345566723. The next prime is 11223345566803. The reversal of 11223345566789 is 98766554332211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9695488882564 + 1527856684225 = 3113758^2 + 1236065^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223345566789 - 2⁴⁰ = 10123833939013 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223345563789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611672783394 + 5611672783395.

It is an arithmetic number, because the mean of its divisors is an integer number (5611672783395).

Almost surely, 2^{11223345566789} is an apocalyptic number.

It is an amenable number.

11223345566789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223345566789 is an equidigital number, since it uses as much as digits as its factorization.

11223345566789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 62.

The spelling of 11223345566789 in words is "eleven trillion, two hundred twenty-three billion, three hundred forty-five million, five hundred sixty-six thousand, seven hundred eighty-nine".