1123223440545 has 96 divisors (see below), whose sum is σ = 2012172244992. Its totient is φ = 579189574656.

The previous prime is 1123223440531. The next prime is 1123223440561. The reversal of 1123223440545 is 5450443223211.

It is a happy number.

1123223440545 is a `hidden beast` number, since 1 + 1 + 23 + 22 + 34 + 40 + 545 = 666.

It is not a de Polignac number, because 1123223440545 - 2⁹ = 1123223440033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 229086564 + ... + 229091466.

It is an arithmetic number, because the mean of its divisors is an integer number (20960127552).

Almost surely, 2^{1123223440545} is an apocalyptic number.

1123223440545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123223440545 is a deficient number, since it is larger than the sum of its proper divisors (888948804447).

1123223440545 is a wasteful number, since it uses less digits than its factorization.

1123223440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791 (or 5788 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1123223440545 its reverse (5450443223211), we get a palindrome (6573666663756).

The spelling of 1123223440545 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, four hundred forty thousand, five hundred forty-five".