444555812345 has 4 divisors (see below), whose sum is σ = 533466974820. Its totient is φ = 355644649872.

The previous prime is 444555812341. The next prime is 444555812357. The reversal of 444555812345 is 543218555444.

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 302953369744 + 141602442601 = 550412^2 + 376301^2 .

It is a cyclic number.

It is not a de Polignac number, because 444555812345 - 2² = 444555812341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444555812293 and 444555812302.

It is not an unprimeable number, because it can be changed into a prime (444555812341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44455581230 + ... + 44455581239.

It is an arithmetic number, because the mean of its divisors is an integer number (133366743705).

Almost surely, 2^444555812345 is an apocalyptic number.

It is an amenable number.

444555812345 is a deficient number, since it is larger than the sum of its proper divisors (88911162475).

444555812345 is an equidigital number, since it uses as much as digits as its factorization.

444555812345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88911162474.

The product of its digits is 7680000, while the sum is 50.

The spelling of 444555812345 in words is "four hundred forty-four billion, five hundred fifty-five million, eight hundred twelve thousand, three hundred forty-five".