12440233536 has 112 divisors (see below), whose sum is σ = 34895454720. Its totient is φ = 3904450560.

The previous prime is 12440233523. The next prime is 12440233541. The reversal of 12440233536 is 63533204421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12440233497 and 12440233506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191980 + ... + 248468.

It is an arithmetic number, because the mean of its divisors is an integer number (311566560).

Almost surely, 2^12440233536 is an apocalyptic number.

12440233536 is a gapful number since it is divisible by the number (16) 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 12440233536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17447727360).

12440233536 is an abundant number, since it is smaller than the sum of its proper divisors (22455221184).

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

12440233536 is a wasteful number, since it uses less digits than its factorization.

12440233536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56572 (or 56562 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 12440233536 its reverse (63533204421), we get a palindrome (75973437957).

The spelling of 12440233536 in words is "twelve billion, four hundred forty million, two hundred thirty-three thousand, five hundred thirty-six".