12400443104 has 24 divisors (see below), whose sum is σ = 27900997488. Its totient is φ = 5314475520.

The previous prime is 12400443103. The next prime is 12400443109. The reversal of 12400443104 is 40134400421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12400443104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400443103) 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, 27679337 + ... + 27679784.

It is an arithmetic number, because the mean of its divisors is an integer number (1162541562).

Almost surely, 2^12400443104 is an apocalyptic number.

12400443104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12400443104 is an abundant number, since it is smaller than the sum of its proper divisors (15500554384).

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

12400443104 is an equidigital number, since it uses as much as digits as its factorization.

12400443104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55359138 (or 55359130 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12400443104 its reverse (40134400421), we get a palindrome (52534843525).

The spelling of 12400443104 in words is "twelve billion, four hundred million, four hundred forty-three thousand, one hundred four".