208016842205 has 4 divisors (see below), whose sum is σ = 249620210652. Its totient is φ = 166413473760.

The previous prime is 208016842199. The next prime is 208016842219. The reversal of 208016842205 is 502248610802.

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 149380704004 + 58636138201 = 386498^2 + 242149^2 .

It is not a de Polignac number, because 208016842205 - 2⁶ = 208016842141 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, 20801684216 + ... + 20801684225.

It is an arithmetic number, because the mean of its divisors is an integer number (62405052663).

Almost surely, 2^208016842205 is an apocalyptic number.

It is an amenable number.

208016842205 is a deficient number, since it is larger than the sum of its proper divisors (41603368447).

208016842205 is an equidigital number, since it uses as much as digits as its factorization.

208016842205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41603368446.

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 208016842205 in words is "two hundred eight billion, sixteen million, eight hundred forty-two thousand, two hundred five".