444142443435521 has 8 divisors (see below), whose sum is σ = 452589421198824. Its totient is φ = 435697944622720.

The previous prime is 444142443435511. The next prime is 444142443435577. The reversal of 444142443435521 is 125534344241444.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46989160458496 + 397153282977025 = 6854864^2 + 19928705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444142443435521 - 2¹⁴ = 444142443419137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444142443435521.

It is not an unprimeable number, because it can be changed into a prime (444142443435511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619375886 + ... + 620092551.

It is an arithmetic number, because the mean of its divisors is an integer number (56573677649853).

Almost surely, 2^{444142443435521} is an apocalyptic number.

It is an amenable number.

444142443435521 is a deficient number, since it is larger than the sum of its proper divisors (8446977763303).

444142443435521 is a wasteful number, since it uses less digits than its factorization.

444142443435521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239475251.

The product of its digits is 14745600, while the sum is 50.

Adding to 444142443435521 its reverse (125534344241444), we get a palindrome (569676787676965).

The spelling of 444142443435521 in words is "four hundred forty-four trillion, one hundred forty-two billion, four hundred forty-three million, four hundred thirty-five thousand, five hundred twenty-one".