285078281105 has 8 divisors (see below), whose sum is σ = 342100898664. Its totient is φ = 228057984000.

The previous prime is 285078281093. The next prime is 285078281113. The reversal of 285078281105 is 501182870582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20264091904 + 264814189201 = 142352^2 + 514601^2 .

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

It is not a de Polignac number, because 285078281105 - 2⁶ = 285078281041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 285078281105.

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, 297296 + ... + 811505.

It is an arithmetic number, because the mean of its divisors is an integer number (42762612333).

Almost surely, 2^285078281105 is an apocalyptic number.

It is an amenable number.

285078281105 is a deficient number, since it is larger than the sum of its proper divisors (57022617559).

285078281105 is a wasteful number, since it uses less digits than its factorization.

285078281105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160227.

The product of its (nonzero) digits is 358400, while the sum is 47.

The spelling of 285078281105 in words is "two hundred eighty-five billion, seventy-eight million, two hundred eighty-one thousand, one hundred five".