444555220045 has 16 divisors (see below), whose sum is σ = 546501538800. Its totient is φ = 346954752000.

The previous prime is 444555220009. The next prime is 444555220099. The reversal of 444555220045 is 540022555444.

It can be written as a sum of positive squares in 8 ways, for example, as 155080015204 + 289475204841 = 393802^2 + 538029^2 .

It is not a de Polignac number, because 444555220045 - 2¹⁵ = 444555187277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7853845 + ... + 7910245.

It is an arithmetic number, because the mean of its divisors is an integer number (34156346175).

Almost surely, 2^444555220045 is an apocalyptic number.

It is an amenable number.

444555220045 is a deficient number, since it is larger than the sum of its proper divisors (101946318755).

444555220045 is a wasteful number, since it uses less digits than its factorization.

444555220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94896.

The product of its (nonzero) digits is 640000, while the sum is 40.

Adding to 444555220045 its reverse (540022555444), we get a palindrome (984577775489).

The spelling of 444555220045 in words is "four hundred forty-four billion, five hundred fifty-five million, two hundred twenty thousand, forty-five".