208727773832 has 12 divisors (see below), whose sum is σ = 391366998855. Its totient is φ = 104363240808.

The previous prime is 208727773817. The next prime is 208727773883. The reversal of 208727773832 is 238377727802.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 104363886916 + 104363886916 = 323054^2 + 323054^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=323054.

It is a super-3 number, since 3×208727773832³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1211453 + ... + 1372979.

Almost surely, 2^208727773832 is an apocalyptic number.

It is an amenable number.

208727773832 is a deficient number, since it is larger than the sum of its proper divisors (182639225023).

208727773832 is an frugal number, since it uses more digits than its factorization.

208727773832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323060 (or 161529 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 56.

The spelling of 208727773832 in words is "two hundred eight billion, seven hundred twenty-seven million, seven hundred seventy-three thousand, eight hundred thirty-two".