11223557789 has 2 divisors, whose sum is σ = 11223557790. Its totient is φ = 11223557788.

The previous prime is 11223557731. The next prime is 11223557797. The reversal of 11223557789 is 98775532211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11220105625 + 3452164 = 105925^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223557789 - 2¹⁶ = 11223492253 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 (11223551789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611778894 + 5611778895.

It is an arithmetic number, because the mean of its divisors is an integer number (5611778895).

Almost surely, 2^11223557789 is an apocalyptic number.

It is an amenable number.

11223557789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223557789 is an equidigital number, since it uses as much as digits as its factorization.

11223557789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 50.

The spelling of 11223557789 in words is "eleven billion, two hundred twenty-three million, five hundred fifty-seven thousand, seven hundred eighty-nine".