13444542220040 has 32 divisors (see below), whose sum is σ = 30254312398680. Its totient is φ = 5377089349632.

The previous prime is 13444542220027. The next prime is 13444542220061. The reversal of 13444542220040 is 4002224544431.

It can be written as a sum of positive squares in 4 ways, for example, as 5258500232164 + 8186041987876 = 2293142^2 + 2861126^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22436159 + ... + 23027598.

Almost surely, 2^{13444542220040} is an apocalyptic number.

13444542220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13444542220040 is an abundant number, since it is smaller than the sum of its proper divisors (16809770178640).

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

13444542220040 is a wasteful number, since it uses less digits than its factorization.

13444542220040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45471161 (or 45471157 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 13444542220040 its reverse (4002224544431), we get a palindrome (17446766764471).

The spelling of 13444542220040 in words is "thirteen trillion, four hundred forty-four billion, five hundred forty-two million, two hundred twenty thousand, forty".