1244989728752 has 480 divisors, whose sum is σ = 3218394009600. Its totient is φ = 465509721600.

The previous prime is 1244989728679. The next prime is 1244989728779. The reversal of 1244989728752 is 2578279894421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4055340983 + ... + 4055341289.

It is an arithmetic number, because the mean of its divisors is an integer number (6704987520).

Almost surely, 2^{1244989728752} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244989728752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609197004800).

1244989728752 is an abundant number, since it is smaller than the sum of its proper divisors (1973404280848).

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

1244989728752 is a wasteful number, since it uses less digits than its factorization.

1244989728752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 555 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 68.

The spelling of 1244989728752 in words is "one trillion, two hundred forty-four billion, nine hundred eighty-nine million, seven hundred twenty-eight thousand, seven hundred fifty-two".