6448442565 has 16 divisors (see below), whose sum is σ = 10320152256. Its totient is φ = 3438288000.

The previous prime is 6448442549. The next prime is 6448442591. The reversal of 6448442565 is 5652448446.

It is not a de Polignac number, because 6448442565 - 2⁴ = 6448442549 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, 7705 + ... + 113825.

It is an arithmetic number, because the mean of its divisors is an integer number (645009516).

Almost surely, 2^6448442565 is an apocalyptic number.

It is an amenable number.

6448442565 is a deficient number, since it is larger than the sum of its proper divisors (3871709691).

6448442565 is a wasteful number, since it uses less digits than its factorization.

6448442565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110180.

The product of its digits is 3686400, while the sum is 48.

The square root of 6448442565 is about 80302.1952688717. The cubic root of 6448442565 is about 1861.3081487233.

The spelling of 6448442565 in words is "six billion, four hundred forty-eight million, four hundred forty-two thousand, five hundred sixty-five".