2016855205 has 4 divisors (see below), whose sum is σ = 2420226252. Its totient is φ = 1613484160.

The previous prime is 2016855193. The next prime is 2016855221. The reversal of 2016855205 is 5025586102.

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 1274347204 + 742508001 = 35698^2 + 27249^2 .

It is not a de Polignac number, because 2016855205 - 2¹³ = 2016847013 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, 201685516 + ... + 201685525.

It is an arithmetic number, because the mean of its divisors is an integer number (605056563).

Almost surely, 2^2016855205 is an apocalyptic number.

It is an amenable number.

2016855205 is a deficient number, since it is larger than the sum of its proper divisors (403371047).

2016855205 is an equidigital number, since it uses as much as digits as its factorization.

2016855205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403371046.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 2016855205 is about 44909.4110961166. The cubic root of 2016855205 is about 1263.4505246458.

The spelling of 2016855205 in words is "two billion, sixteen million, eight hundred fifty-five thousand, two hundred five".