44143311421 has 16 divisors (see below), whose sum is σ = 48996964800. Its totient is φ = 39430441600.

The previous prime is 44143311367. The next prime is 44143311449. The reversal of 44143311421 is 12411334144.

It is not a de Polignac number, because 44143311421 - 2¹⁷ = 44143180349 is a prime.

It is a super-2 number, since 2×44143311421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44143311421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44143371421) 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 15 ways as a sum of consecutive naturals, for example, 1373625 + ... + 1405393.

It is an arithmetic number, because the mean of its divisors is an integer number (3062310300).

Almost surely, 2^44143311421 is an apocalyptic number.

It is an amenable number.

44143311421 is a deficient number, since it is larger than the sum of its proper divisors (4853653379).

44143311421 is a wasteful number, since it uses less digits than its factorization.

44143311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33980.

The product of its digits is 4608, while the sum is 28.

Adding to 44143311421 its reverse (12411334144), we get a palindrome (56554645565).

The spelling of 44143311421 in words is "forty-four billion, one hundred forty-three million, three hundred eleven thousand, four hundred twenty-one".