1244044544220 has 120 divisors (see below), whose sum is σ = 3903029178048. Its totient is φ = 331709904000.

The previous prime is 1244044544173. The next prime is 1244044544227. The reversal of 1244044544220 is 224454404421.

1244044544220 is a `hidden beast` number, since 1 + 24 + 404 + 4 + 5 + 4 + 4 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244044544227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17510770 + ... + 17581670.

Almost surely, 2^{1244044544220} is an apocalyptic number.

1244044544220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244044544220 is an abundant number, since it is smaller than the sum of its proper divisors (2658984633828).

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

1244044544220 is a wasteful number, since it uses less digits than its factorization.

1244044544220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81753 (or 81742 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 36.

Adding to 1244044544220 its reverse (224454404421), we get a palindrome (1468498948641).

The spelling of 1244044544220 in words is "one trillion, two hundred forty-four billion, forty-four million, five hundred forty-four thousand, two hundred twenty".