1244540140444 has 24 divisors (see below), whose sum is σ = 2238646924080. Its totient is φ = 604954377216.

The previous prime is 1244540140423. The next prime is 1244540140471. The reversal of 1244540140444 is 4440410454421.

It is a super-2 number, since 2×1244540140444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3274714 + ... + 3634945.

It is an arithmetic number, because the mean of its divisors is an integer number (93276955170).

Almost surely, 2^{1244540140444} is an apocalyptic number.

It is an amenable number.

1244540140444 is a deficient number, since it is larger than the sum of its proper divisors (994106783636).

1244540140444 is a wasteful number, since it uses less digits than its factorization.

1244540140444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910917 (or 6910915 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 37.

Adding to 1244540140444 its reverse (4440410454421), we get a palindrome (5684950594865).

The spelling of 1244540140444 in words is "one trillion, two hundred forty-four billion, five hundred forty million, one hundred forty thousand, four hundred forty-four".