27800275550 has 48 divisors (see below), whose sum is σ = 52126351200. Its totient is φ = 11030597760.

The previous prime is 27800275483. The next prime is 27800275663. The reversal of 27800275550 is 5557200872.

It is a junction number, because it is equal to n+sod(n) for n = 27800275498 and 27800275507.

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 23 ways as a sum of consecutive naturals, for example, 3433607 + ... + 3441693.

It is an arithmetic number, because the mean of its divisors is an integer number (1085965650).

Almost surely, 2^27800275550 is an apocalyptic number.

27800275550 is a deficient number, since it is larger than the sum of its proper divisors (24326075650).

27800275550 is a wasteful number, since it uses less digits than its factorization.

27800275550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8645 (or 8640 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 27800275550 in words is "twenty-seven billion, eight hundred million, two hundred seventy-five thousand, five hundred fifty".