4278855817 has 16 divisors (see below), whose sum is σ = 4790790144. Its totient is φ = 3802176000.

The previous prime is 4278855719. The next prime is 4278855827. The reversal of 4278855817 is 7185588724.

It is not a de Polignac number, because 4278855817 - 2¹⁵ = 4278823049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278855827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77409 + ... + 120622.

It is an arithmetic number, because the mean of its divisors is an integer number (299424384).

Almost surely, 2^4278855817 is an apocalyptic number.

It is an amenable number.

4278855817 is a deficient number, since it is larger than the sum of its proper divisors (511934327).

4278855817 is a wasteful number, since it uses less digits than its factorization.

4278855817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198120.

The product of its digits is 5017600, while the sum is 55.

The square root of 4278855817 is about 65412.9636769349. The cubic root of 4278855817 is about 1623.4635818915.

The spelling of 4278855817 in words is "four billion, two hundred seventy-eight million, eight hundred fifty-five thousand, eight hundred seventeen".