4278307204085 has 4 divisors (see below), whose sum is σ = 5133968644908. Its totient is φ = 3422645763264.

The previous prime is 4278307204063. The next prime is 4278307204099. The reversal of 4278307204085 is 5804027038724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 859214055844 + 3419093148241 = 926938^2 + 1849079^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278307204085 - 2²⁰ = 4278306155509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427830720404 + ... + 427830720413.

It is an arithmetic number, because the mean of its divisors is an integer number (1283492161227).

Almost surely, 2^{4278307204085} is an apocalyptic number.

It is an amenable number.

4278307204085 is a deficient number, since it is larger than the sum of its proper divisors (855661440823).

4278307204085 is an equidigital number, since it uses as much as digits as its factorization.

4278307204085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855661440822.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 4278307204085 in words is "four trillion, two hundred seventy-eight billion, three hundred seven million, two hundred four thousand, eighty-five".