144044104020021 has 48 divisors (see below), whose sum is σ = 228589421611824. Its totient is φ = 87031318413312.

The previous prime is 144044104020013. The next prime is 144044104020077. The reversal of 144044104020021 is 120020401440441.

It is a happy number.

144044104020021 is a `hidden beast` number, since 1 + 4 + 4 + 0 + 4 + 410 + 40 + 200 + 2 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 265059195921 + 143779044824100 = 514839^2 + 11990790^2 .

It is not a de Polignac number, because 144044104020021 - 2³ = 144044104020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144044104020001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130610640 + ... + 131708873.

It is an arithmetic number, because the mean of its divisors is an integer number (4762279616913).

Almost surely, 2^{144044104020021} is an apocalyptic number.

It is an amenable number.

144044104020021 is a deficient number, since it is larger than the sum of its proper divisors (84545317591803).

144044104020021 is a wasteful number, since it uses less digits than its factorization.

144044104020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262319670 (or 262319667 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 144044104020021 its reverse (120020401440441), we get a palindrome (264064505460462).

The spelling of 144044104020021 in words is "one hundred forty-four trillion, forty-four billion, one hundred four million, twenty thousand, twenty-one".