4278488478205 has 8 divisors (see below), whose sum is σ = 5134229179704. Its totient is φ = 3422762112000.

The previous prime is 4278488478181. The next prime is 4278488478217. The reversal of 4278488478205 is 5028748848724.

4278488478205 is digitally balanced in base 3, 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 4 ways, for example, as 1960509633124 + 2317978845081 = 1400182^2 + 1522491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4278488478205 - 2¹³ = 4278488470013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2915896 + ... + 4130305.

It is an arithmetic number, because the mean of its divisors is an integer number (641778647463).

Almost surely, 2^{4278488478205} is an apocalyptic number.

It is an amenable number.

4278488478205 is a deficient number, since it is larger than the sum of its proper divisors (855740701499).

4278488478205 is a wasteful number, since it uses less digits than its factorization.

4278488478205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167647.

The product of its (nonzero) digits is 256901120, while the sum is 67.

The spelling of 4278488478205 in words is "four trillion, two hundred seventy-eight billion, four hundred eighty-eight million, four hundred seventy-eight thousand, two hundred five".