44444240044021 has 4 divisors (see below), whose sum is σ = 47058607105452. Its totient is φ = 41829872982592.

The previous prime is 44444240044019. The next prime is 44444240044031. The reversal of 44444240044021 is 12044004244444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21079245993796 + 23364994050225 = 4591214^2 + 4833735^2 .

It is a cyclic number.

It is not a de Polignac number, because 44444240044021 - 2¹ = 44444240044019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444240044031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1307183530690 + ... + 1307183530723.

It is an arithmetic number, because the mean of its divisors is an integer number (11764651776363).

Almost surely, 2^{44444240044021} is an apocalyptic number.

It is an amenable number.

44444240044021 is a deficient number, since it is larger than the sum of its proper divisors (2614367061431).

44444240044021 is a wasteful number, since it uses less digits than its factorization.

44444240044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614367061430.

The product of its (nonzero) digits is 262144, while the sum is 37.

Adding to 44444240044021 its reverse (12044004244444), we get a palindrome (56488244288465).

The spelling of 44444240044021 in words is "forty-four trillion, four hundred forty-four billion, two hundred forty million, forty-four thousand, twenty-one".