4078705643818 has 12 divisors (see below), whose sum is σ = 6624879877638. Its totient is φ = 1882479527760.

The previous prime is 4078705643807. The next prime is 4078705643867. The reversal of 4078705643818 is 8183465078704.

4078705643818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2689577040049 + 1389128603769 = 1639993^2 + 1178613^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6033587893 + ... + 6033588568.

Almost surely, 2^{4078705643818} is an apocalyptic number.

4078705643818 is a deficient number, since it is larger than the sum of its proper divisors (2546174233820).

4078705643818 is a wasteful number, since it uses less digits than its factorization.

4078705643818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067176489 (or 12067176476 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 4078705643818 in words is "four trillion, seventy-eight billion, seven hundred five million, six hundred forty-three thousand, eight hundred eighteen".