27730066550 has 12 divisors (see below), whose sum is σ = 51577923876. Its totient is φ = 11092026600.

The previous prime is 27730066519. The next prime is 27730066577. The reversal of 27730066550 is 5566003772.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27730066498 and 27730066507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277300616 + ... + 277300715.

It is an arithmetic number, because the mean of its divisors is an integer number (4298160323).

Almost surely, 2^27730066550 is an apocalyptic number.

27730066550 is a deficient number, since it is larger than the sum of its proper divisors (23847857326).

27730066550 is a wasteful number, since it uses less digits than its factorization.

27730066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554601343 (or 554601338 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 27730066550 in words is "twenty-seven billion, seven hundred thirty million, sixty-six thousand, five hundred fifty".