1123345566889 has 32 divisors (see below), whose sum is σ = 1444013303040. Its totient is φ = 850121816832.

The previous prime is 1123345566859. The next prime is 1123345566911. The reversal of 1123345566889 is 9886655433211.

It is a cyclic number.

It is not a de Polignac number, because 1123345566889 - 2¹³ = 1123345558697 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123345566809) 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 in 31 ways as a sum of consecutive naturals, for example, 2628754 + ... + 3026059.

It is an arithmetic number, because the mean of its divisors is an integer number (45125415720).

Almost surely, 2^{1123345566889} is an apocalyptic number.

It is an amenable number.

1123345566889 is a deficient number, since it is larger than the sum of its proper divisors (320667736151).

1123345566889 is a wasteful number, since it uses less digits than its factorization.

1123345566889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654929.

The product of its digits is 37324800, while the sum is 61.

The spelling of 1123345566889 in words is "one trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred sixty-six thousand, eight hundred eighty-nine".