6448344815 has 8 divisors (see below), whose sum is σ = 8441469648. Its totient is φ = 4689705280.

The previous prime is 6448344787. The next prime is 6448344821. The reversal of 6448344815 is 5184438446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6448344815 - 2¹⁰ = 6448343791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6448344815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58621262 + ... + 58621371.

It is an arithmetic number, because the mean of its divisors is an integer number (1055183706).

Almost surely, 2^6448344815 is an apocalyptic number.

6448344815 is a deficient number, since it is larger than the sum of its proper divisors (1993124833).

6448344815 is a wasteful number, since it uses less digits than its factorization.

6448344815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117242649.

The product of its digits is 1474560, while the sum is 47.

The square root of 6448344815 is about 80301.5866281607. The cubic root of 6448344815 is about 1861.2987436724.

The spelling of 6448344815 in words is "six billion, four hundred forty-eight million, three hundred forty-four thousand, eight hundred fifteen".