444853648649 has 4 divisors (see below), whose sum is σ = 448249478160. Its totient is φ = 441457819140.

The previous prime is 444853648621. The next prime is 444853648663. The reversal of 444853648649 is 946846358444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444853648649 - 2¹² = 444853644553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444853648619) 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, 1697914559 + ... + 1697914820.

It is an arithmetic number, because the mean of its divisors is an integer number (112062369540).

Almost surely, 2^444853648649 is an apocalyptic number.

It is an amenable number.

444853648649 is a deficient number, since it is larger than the sum of its proper divisors (3395829511).

444853648649 is a wasteful number, since it uses less digits than its factorization.

444853648649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395829510.

The product of its digits is 318504960, while the sum is 65.

The spelling of 444853648649 in words is "four hundred forty-four billion, eight hundred fifty-three million, six hundred forty-eight thousand, six hundred forty-nine".