284142859865 has 4 divisors (see below), whose sum is σ = 340971431844. Its totient is φ = 227314287888.

The previous prime is 284142859849. The next prime is 284142859873. The reversal of 284142859865 is 568958241482.

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 46555829824 + 237587030041 = 215768^2 + 487429^2 .

It is a cyclic number.

It is not a de Polignac number, because 284142859865 - 2⁴ = 284142859849 is a prime.

It is a super-2 number, since 2×284142859865² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284142859798 and 284142859807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28414285982 + ... + 28414285991.

It is an arithmetic number, because the mean of its divisors is an integer number (85242857961).

Almost surely, 2^284142859865 is an apocalyptic number.

It is an amenable number.

284142859865 is a deficient number, since it is larger than the sum of its proper divisors (56828571979).

284142859865 is an equidigital number, since it uses as much as digits as its factorization.

284142859865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56828571978.

The product of its digits is 44236800, while the sum is 62.

The spelling of 284142859865 in words is "two hundred eighty-four billion, one hundred forty-two million, eight hundred fifty-nine thousand, eight hundred sixty-five".