144444020340021 has 12 divisors (see below), whose sum is σ = 194940369473088. Its totient is φ = 95135820611944.

The previous prime is 144444020339929. The next prime is 144444020340029. The reversal of 144444020340021 is 120043020444441.

It is not a de Polignac number, because 144444020340021 - 2¹³ = 144444020331829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144444020340029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3494536365 + ... + 3494577698.

It is an arithmetic number, because the mean of its divisors is an integer number (16245030789424).

Almost surely, 2^{144444020340021} is an apocalyptic number.

It is an amenable number.

144444020340021 is a deficient number, since it is larger than the sum of its proper divisors (50496349133067).

144444020340021 is an frugal number, since it uses more digits than its factorization.

144444020340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989114232 (or 6989114149 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 144444020340021 its reverse (120043020444441), we get a palindrome (264487040784462).

The spelling of 144444020340021 in words is "one hundred forty-four trillion, four hundred forty-four billion, twenty million, three hundred forty thousand, twenty-one".