208255641268 has 12 divisors (see below), whose sum is σ = 365424445540. Its totient is φ = 103848656832.

The previous prime is 208255641239. The next prime is 208255641281. The reversal of 208255641268 is 862146552802.

It can be written as a sum of positive squares in 2 ways, for example, as 121429947024 + 86825694244 = 348468^2 + 294662^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69789273 + ... + 69792256.

Almost surely, 2^208255641268 is an apocalyptic number.

It is an amenable number.

208255641268 is a deficient number, since it is larger than the sum of its proper divisors (157168804272).

208255641268 is a wasteful number, since it uses less digits than its factorization.

208255641268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139581906 (or 139581904 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 208255641268 in words is "two hundred eight billion, two hundred fifty-five million, six hundred forty-one thousand, two hundred sixty-eight".