448979217256 has 16 divisors (see below), whose sum is σ = 862368619140. Its totient is φ = 219014252160.

The previous prime is 448979217251. The next prime is 448979217263. The reversal of 448979217256 is 652712979844.

It can be written as a sum of positive squares in 2 ways, for example, as 378188100900 + 70791116356 = 614970^2 + 266066^2 .

It is not an unprimeable number, because it can be changed into a prime (448979217251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 684419211 + ... + 684419866.

Almost surely, 2^448979217256 is an apocalyptic number.

It is an amenable number.

448979217256 is a deficient number, since it is larger than the sum of its proper divisors (413389401884).

448979217256 is a wasteful number, since it uses less digits than its factorization.

448979217256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368839124 (or 1368839120 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 64.

The spelling of 448979217256 in words is "four hundred forty-eight billion, nine hundred seventy-nine million, two hundred seventeen thousand, two hundred fifty-six".