1123344556789 has 32 divisors (see below), whose sum is σ = 1420110653696. Its totient is φ = 864677514240.

The previous prime is 1123344556787. The next prime is 1123344556891. The reversal of 1123344556789 is 9876554433211.

It is a cyclic number.

It is not a de Polignac number, because 1123344556789 - 2¹ = 1123344556787 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 (1123344556787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42818494 + ... + 42844720.

It is an arithmetic number, because the mean of its divisors is an integer number (44378457928).

Almost surely, 2^{1123344556789} is an apocalyptic number.

It is an amenable number.

1123344556789 is a deficient number, since it is larger than the sum of its proper divisors (296766096907).

1123344556789 is a wasteful number, since it uses less digits than its factorization.

1123344556789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39005.

The product of its digits is 21772800, while the sum is 58.

The spelling of 1123344556789 in words is "one trillion, one hundred twenty-three billion, three hundred forty-four million, five hundred fifty-six thousand, seven hundred eighty-nine".