208156900834 has 4 divisors (see below), whose sum is σ = 312235351254. Its totient is φ = 104078450416.

The previous prime is 208156900817. The next prime is 208156900849. The reversal of 208156900834 is 438009651802.

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., 179180350209 + 28976550625 = 423297^2 + 170225^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52039225207 + ... + 52039225210.

Almost surely, 2^208156900834 is an apocalyptic number.

208156900834 is a deficient number, since it is larger than the sum of its proper divisors (104078450420).

208156900834 is a wasteful number, since it uses less digits than its factorization.

208156900834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104078450419.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 208156900834 in words is "two hundred eight billion, one hundred fifty-six million, nine hundred thousand, eight hundred thirty-four".