27805305530 has 16 divisors (see below), whose sum is σ = 50058846504. Its totient is φ = 11120056320.

The previous prime is 27805305499. The next prime is 27805305557. The reversal of 27805305530 is 3550350872.

It can be written as a sum of positive squares in 4 ways, for example, as 19954105081 + 7851200449 = 141259^2 + 88607^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201107 + ... + 309926.

Almost surely, 2^27805305530 is an apocalyptic number.

27805305530 is a deficient number, since it is larger than the sum of its proper divisors (22253540974).

27805305530 is a wasteful number, since it uses less digits than its factorization.

27805305530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516481.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 27805305530 in words is "twenty-seven billion, eight hundred five million, three hundred five thousand, five hundred thirty".