1244025040000 has 160 divisors (see below), whose sum is σ = 3196829687040. Its totient is φ = 481557120000.

The previous prime is 1244025039989. The next prime is 1244025040007. The reversal of 1244025040000 is 405204421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (1244025040007) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2229189 + ... + 2730811.

It is an arithmetic number, because the mean of its divisors is an integer number (19980185544).

Almost surely, 2^{1244025040000} is an apocalyptic number.

1244025040000 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 1244025040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598414843520).

1244025040000 is an abundant number, since it is smaller than the sum of its proper divisors (1952804647040).

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

1244025040000 is an frugal number, since it uses more digits than its factorization.

1244025040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501688 (or 501661 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The spelling of 1244025040000 in words is "one trillion, two hundred forty-four billion, twenty-five million, forty thousand".