208680872210 has 16 divisors (see below), whose sum is σ = 378018092376. Its totient is φ = 82940677248.

The previous prime is 208680872207. The next prime is 208680872227. The reversal of 208680872210 is 12278086802.

It can be written as a sum of positive squares in 4 ways, for example, as 176915295769 + 31765576441 = 420613^2 + 178229^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66457307 + ... + 66460446.

Almost surely, 2^208680872210 is an apocalyptic number.

208680872210 is a deficient number, since it is larger than the sum of its proper divisors (169337220166).

208680872210 is a wasteful number, since it uses less digits than its factorization.

208680872210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132917917.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 208680872210 in words is "two hundred eight billion, six hundred eighty million, eight hundred seventy-two thousand, two hundred ten".