1123345566789 has 16 divisors (see below), whose sum is σ = 1514693880000. Its totient is φ = 740447934336.

The previous prime is 1123345566751. The next prime is 1123345566809. The reversal of 1123345566789 is 9876655433211.

It is a happy number.

It is not a de Polignac number, because 1123345566789 - 2⁷ = 1123345566661 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123345566709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6455367 + ... + 6627099.

It is an arithmetic number, because the mean of its divisors is an integer number (94668367500).

Almost surely, 2^{1123345566789} is an apocalyptic number.

It is an amenable number.

1123345566789 is a deficient number, since it is larger than the sum of its proper divisors (391348313211).

1123345566789 is a wasteful number, since it uses less digits than its factorization.

1123345566789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196324.

The product of its digits is 32659200, while the sum is 60.

The spelling of 1123345566789 in words is "one trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred sixty-six thousand, seven hundred eighty-nine".