1123433223440 has 160 divisors (see below), whose sum is σ = 2879013767040. Its totient is φ = 404288409600.

The previous prime is 1123433223421. The next prime is 1123433223443. The reversal of 1123433223440 is 443223343211.

It is a junction number, because it is equal to n+sod(n) for n = 1123433223397 and 1123433223406.

It is not an unprimeable number, because it can be changed into a prime (1123433223443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100651460 + ... + 100662620.

It is an arithmetic number, because the mean of its divisors is an integer number (17993836044).

Almost surely, 2^{1123433223440} is an apocalyptic number.

1123433223440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123433223440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439506883520).

1123433223440 is an abundant number, since it is smaller than the sum of its proper divisors (1755580543600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123433223440 is a wasteful number, since it uses less digits than its factorization.

1123433223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12361 (or 12355 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 1123433223440 its reverse (443223343211), we get a palindrome (1566656566651).

The spelling of 1123433223440 in words is "one trillion, one hundred twenty-three billion, four hundred thirty-three million, two hundred twenty-three thousand, four hundred forty".