12218419648 has 28 divisors (see below), whose sum is σ = 24315843672. Its totient is φ = 6091592960.

The previous prime is 12218419583. The next prime is 12218419669. The reversal of 12218419648 is 84691481221.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12218419598 and 12218419607.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 252883 + ... + 297298.

Almost surely, 2^12218419648 is an apocalyptic number.

It is an amenable number.

12218419648 is a deficient number, since it is larger than the sum of its proper divisors (12097424024).

12218419648 is an equidigital number, since it uses as much as digits as its factorization.

12218419648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550540 (or 550530 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The spelling of 12218419648 in words is "twelve billion, two hundred eighteen million, four hundred nineteen thousand, six hundred forty-eight".