208136634898 has 4 divisors (see below), whose sum is σ = 312204952350. Its totient is φ = 104068317448.

The previous prime is 208136634869. The next prime is 208136634911. The reversal of 208136634898 is 898436631802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113944728249 + 94191906649 = 337557^2 + 306907^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52034158723 + ... + 52034158726.

Almost surely, 2^208136634898 is an apocalyptic number.

208136634898 is a deficient number, since it is larger than the sum of its proper divisors (104068317452).

208136634898 is a wasteful number, since it uses less digits than its factorization.

208136634898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104068317451.

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 208136634898 in words is "two hundred eight billion, one hundred thirty-six million, six hundred thirty-four thousand, eight hundred ninety-eight".