1244377645056 has 1260 divisors, whose sum is σ = 4859920950192. Its totient is φ = 313918488576.

The previous prime is 1244377645013. The next prime is 1244377645081. The reversal of 1244377645056 is 6505467734421.

1244377645056 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 3 + 77 + 64 + 505 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1244377644993 and 1244377645011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 54103375861 + ... + 54103375883.

Almost surely, 2^{1244377645056} is an apocalyptic number.

1244377645056 is a gapful number since it is divisible by the number (16) 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 1244377645056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2429960475096).

1244377645056 is an abundant number, since it is smaller than the sum of its proper divisors (3615543305136).

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

1244377645056 is an frugal number, since it uses more digits than its factorization.

1244377645056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 1244377645056 in words is "one trillion, two hundred forty-four billion, three hundred seventy-seven million, six hundred forty-five thousand, fifty-six".