4278812223842 has 32 divisors (see below), whose sum is σ = 7154089674480. Its totient is φ = 1905719961600.

The previous prime is 4278812223823. The next prime is 4278812223919. The reversal of 4278812223842 is 2483222188724.

It is a Cunningham number, because it is equal to 2068529²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 4278812223841 = 1^2 + 2068529^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102659 + ... + 2927142.

Almost surely, 2^{4278812223842} is an apocalyptic number.

4278812223842 is a deficient number, since it is larger than the sum of its proper divisors (2875277450638).

4278812223842 is a wasteful number, since it uses less digits than its factorization.

4278812223842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031718.

The product of its digits is 5505024, while the sum is 53.

The spelling of 4278812223842 in words is "four trillion, two hundred seventy-eight billion, eight hundred twelve million, two hundred twenty-three thousand, eight hundred forty-two".