4278538243705 has 8 divisors (see below), whose sum is σ = 5600995519104. Its totient is φ = 3111664177200.

The previous prime is 4278538243687. The next prime is 4278538243717. The reversal of 4278538243705 is 5073428358724.

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

It is not a de Polignac number, because 4278538243705 - 2³³ = 4269948309113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4278538243705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38895802161 + ... + 38895802270.

It is an arithmetic number, because the mean of its divisors is an integer number (700124439888).

Almost surely, 2^{4278538243705} is an apocalyptic number.

It is an amenable number.

4278538243705 is a deficient number, since it is larger than the sum of its proper divisors (1322457275399).

4278538243705 is a wasteful number, since it uses less digits than its factorization.

4278538243705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77791604447.

The product of its (nonzero) digits is 45158400, while the sum is 58.

The spelling of 4278538243705 in words is "four trillion, two hundred seventy-eight billion, five hundred thirty-eight million, two hundred forty-three thousand, seven hundred five".