444434405545 has 16 divisors (see below), whose sum is σ = 574364023632. Its totient is φ = 328187416320.

The previous prime is 444434405539. The next prime is 444434405561. The reversal of 444434405545 is 545504434444.

It can be written as a sum of positive squares in 8 ways, for example, as 68698506816 + 375735898729 = 262104^2 + 612973^2 .

It is not a de Polignac number, because 444434405545 - 2⁷ = 444434405417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444434405495 and 444434405504.

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, 2442835 + ... + 2618455.

It is an arithmetic number, because the mean of its divisors is an integer number (35897751477).

Almost surely, 2^444434405545 is an apocalyptic number.

It is an amenable number.

444434405545 is a deficient number, since it is larger than the sum of its proper divisors (129929618087).

444434405545 is a wasteful number, since it uses less digits than its factorization.

444434405545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214572.

The product of its (nonzero) digits is 6144000, while the sum is 46.

Adding to 444434405545 its reverse (545504434444), we get a palindrome (989938839989).

The spelling of 444434405545 in words is "four hundred forty-four billion, four hundred thirty-four million, four hundred five thousand, five hundred forty-five".