12440223433 has 16 divisors (see below), whose sum is σ = 14381758656. Its totient is φ = 10634928640.

The previous prime is 12440223391. The next prime is 12440223437. The reversal of 12440223433 is 33432204421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12440223433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440223437) 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, 195210 + ... + 250972.

It is an arithmetic number, because the mean of its divisors is an integer number (898859916).

Almost surely, 2^12440223433 is an apocalyptic number.

It is an amenable number.

12440223433 is a deficient number, since it is larger than the sum of its proper divisors (1941535223).

12440223433 is a wasteful number, since it uses less digits than its factorization.

12440223433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56984.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 12440223433 its reverse (33432204421), we get a palindrome (45872427854).

The spelling of 12440223433 in words is "twelve billion, four hundred forty million, two hundred twenty-three thousand, four hundred thirty-three".