27800865052 has 12 divisors (see below), whose sum is σ = 48652704520. Its totient is φ = 13900092336.

The previous prime is 27800865031. The next prime is 27800865067. The reversal of 27800865052 is 25056800872.

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, 221974 + ... + 323842.

Almost surely, 2^27800865052 is an apocalyptic number.

It is an amenable number.

27800865052 is a deficient number, since it is larger than the sum of its proper divisors (20851839468).

27800865052 is a wasteful number, since it uses less digits than its factorization.

27800865052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170100 (or 170098 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 27800865052 in words is "twenty-seven billion, eight hundred million, eight hundred sixty-five thousand, fifty-two".