12404444420 has 36 divisors (see below), whose sum is σ = 26345647524. Its totient is φ = 4905964800.

The previous prime is 12404444419. The next prime is 12404444449. The reversal of 12404444420 is 2444440421.

It can be written as a sum of positive squares in 6 ways, for example, as 4432097476 + 7972346944 = 66574^2 + 89288^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119270 + ... + 197570.

Almost surely, 2^12404444420 is an apocalyptic number.

12404444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12404444420 is an abundant number, since it is smaller than the sum of its proper divisors (13941203104).

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

12404444420 is an equidigital number, since it uses as much as digits as its factorization.

12404444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78488 (or 78397 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 12404444420 its reverse (2444440421), we get a palindrome (14848884841).

The spelling of 12404444420 in words is "twelve billion, four hundred four million, four hundred forty-four thousand, four hundred twenty".