4243919666212 has 12 divisors (see below), whose sum is σ = 7426876389660. Its totient is φ = 2121954983456.

The previous prime is 4243919666167. The next prime is 4243919666237. The reversal of 4243919666212 is 2126669193424.

It can be written as a sum of positive squares in 2 ways, for example, as 2736854070336 + 1507065595876 = 1654344^2 + 1227626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365678 + ... + 3217594.

It is an arithmetic number, because the mean of its divisors is an integer number (618906365805).

Almost surely, 2^{4243919666212} is an apocalyptic number.

It is an amenable number.

4243919666212 is a deficient number, since it is larger than the sum of its proper divisors (3182956723448).

4243919666212 is a wasteful number, since it uses less digits than its factorization.

4243919666212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424830 (or 2424828 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 55.

The spelling of 4243919666212 in words is "four trillion, two hundred forty-three billion, nine hundred nineteen million, six hundred sixty-six thousand, two hundred twelve".