44044301621 has 4 divisors (see below), whose sum is σ = 44324838732. Its totient is φ = 43763764512.

The previous prime is 44044301579. The next prime is 44044301657. The reversal of 44044301621 is 12610344044.

44044301621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 25633611025 + 18410690596 = 160105^2 + 135686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44044301621 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 (44044301321) 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, 140268320 + ... + 140268633.

It is an arithmetic number, because the mean of its divisors is an integer number (11081209683).

Almost surely, 2^44044301621 is an apocalyptic number.

It is an amenable number.

44044301621 is a deficient number, since it is larger than the sum of its proper divisors (280537111).

44044301621 is a wasteful number, since it uses less digits than its factorization.

44044301621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280537110.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 44044301621 its reverse (12610344044), we get a palindrome (56654645665).

The spelling of 44044301621 in words is "forty-four billion, forty-four million, three hundred one thousand, six hundred twenty-one".