12443412040 has 16 divisors (see below), whose sum is σ = 27997677180. Its totient is φ = 4977364800.

The previous prime is 12443412029. The next prime is 12443412043. The reversal of 12443412040 is 4021434421.

It can be written as a sum of positive squares in 2 ways, for example, as 12361437124 + 81974916 = 111182^2 + 9054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12443411996 and 12443412014.

It is not an unprimeable number, because it can be changed into a prime (12443412043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155542611 + ... + 155542690.

Almost surely, 2^12443412040 is an apocalyptic number.

12443412040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12443412040 is an abundant number, since it is smaller than the sum of its proper divisors (15554265140).

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

12443412040 is a wasteful number, since it uses less digits than its factorization.

12443412040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311085312 (or 311085308 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12443412040 its reverse (4021434421), we get a palindrome (16464846461).

The spelling of 12443412040 in words is "twelve billion, four hundred forty-three million, four hundred twelve thousand, forty".