1244401400000 has 168 divisors, whose sum is σ = 3367098210672. Its totient is φ = 452508800000.

The previous prime is 1244401399991. The next prime is 1244401400023. The reversal of 1244401400000 is 41044421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1917182 + ... + 2482818.

It is an arithmetic number, because the mean of its divisors is an integer number (20042251254).

Almost surely, 2^{1244401400000} is an apocalyptic number.

1244401400000 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 1244401400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683549105336).

1244401400000 is an abundant number, since it is smaller than the sum of its proper divisors (2122696810672).

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

1244401400000 is an frugal number, since it uses more digits than its factorization.

1244401400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565685 (or 565655 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1244401400000 its reverse (41044421), we get a palindrome (1244442444421).

The spelling of 1244401400000 in words is "one trillion, two hundred forty-four billion, four hundred one million, four hundred thousand".