27806043208 has 8 divisors (see below), whose sum is σ = 52136331030. Its totient is φ = 13903021600.

The previous prime is 27806043169. The next prime is 27806043229. The reversal of 27806043208 is 80234060872.

It can be written as a sum of positive squares in only one way, i.e., 22309007044 + 5497036164 = 149362^2 + 74142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1737877693 + ... + 1737877708.

Almost surely, 2^27806043208 is an apocalyptic number.

It is an amenable number.

27806043208 is a deficient number, since it is larger than the sum of its proper divisors (24330287822).

27806043208 is a wasteful number, since it uses less digits than its factorization.

27806043208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475755407 (or 3475755403 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 27806043208 in words is "twenty-seven billion, eight hundred six million, forty-three thousand, two hundred eight".