12648448273 has 6 divisors (see below), whose sum is σ = 13436241206. Its totient is φ = 11904421632.

The previous prime is 12648448243. The next prime is 12648448283. The reversal of 12648448273 is 37284484621.

It can be written as a sum of positive squares in 3 ways, for example, as 3783849169 + 8864599104 = 61513^2 + 94152^2 .

It is not a de Polignac number, because 12648448273 - 2¹³ = 12648440081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12648448243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21882840 + ... + 21883417.

Almost surely, 2^12648448273 is an apocalyptic number.

It is an amenable number.

12648448273 is a deficient number, since it is larger than the sum of its proper divisors (787792933).

12648448273 is an equidigital number, since it uses as much as digits as its factorization.

12648448273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43766291 (or 43766274 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 49.

The spelling of 12648448273 in words is "twelve billion, six hundred forty-eight million, four hundred forty-eight thousand, two hundred seventy-three".