21044041131444 has 12 divisors (see below), whose sum is σ = 49102762640064. Its totient is φ = 7014680377144.

The previous prime is 21044041131437. The next prime is 21044041131559. The reversal of 21044041131444 is 44413114044012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876835047132 + ... + 876835047155.

It is an arithmetic number, because the mean of its divisors is an integer number (4091896886672).

Almost surely, 2^{21044041131444} is an apocalyptic number.

It is an amenable number.

21044041131444 is an abundant number, since it is smaller than the sum of its proper divisors (28058721508620).

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

21044041131444 is a wasteful number, since it uses less digits than its factorization.

21044041131444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753670094294 (or 1753670094292 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 21044041131444 its reverse (44413114044012), we get a palindrome (65457155175456).

The spelling of 21044041131444 in words is "twenty-one trillion, forty-four billion, forty-one million, one hundred thirty-one thousand, four hundred forty-four".