12104001440 has 96 divisors (see below), whose sum is σ = 29887840080. Its totient is φ = 4626284544.

The previous prime is 12104001373. The next prime is 12104001443. The reversal of 12104001440 is 4410040121.

It can be written as a sum of positive squares in 8 ways, for example, as 8391292816 + 3712708624 = 91604^2 + 60932^2 .

It is not an unprimeable number, because it can be changed into a prime (12104001443) 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, 436634 + ... + 463526.

Almost surely, 2^12104001440 is an apocalyptic number.

12104001440 is a gapful number since it is divisible by the number (10) 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 12104001440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14943920040).

12104001440 is an abundant number, since it is smaller than the sum of its proper divisors (17783838640).

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

12104001440 is a wasteful number, since it uses less digits than its factorization.

12104001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27034 (or 27026 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12104001440 its reverse (4410040121), we get a palindrome (16514041561).

The spelling of 12104001440 in words is "twelve billion, one hundred four million, one thousand, four hundred forty".