27755530280 has 16 divisors (see below), whose sum is σ = 62449943220. Its totient is φ = 11102212096.

The previous prime is 27755530247. The next prime is 27755530289. The reversal of 27755530280 is 8203555772.

It can be written as a sum of positive squares in 2 ways, for example, as 27530110084 + 225420196 = 165922^2 + 15014^2 .

It is a super-2 number, since 2×27755530280² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27755530289) by changing a digit.

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, 346944089 + ... + 346944168.

Almost surely, 2^27755530280 is an apocalyptic number.

27755530280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27755530280 is an abundant number, since it is smaller than the sum of its proper divisors (34694412940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27755530280 is a wasteful number, since it uses less digits than its factorization.

27755530280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693888268 (or 693888264 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 27755530280 in words is "twenty-seven billion, seven hundred fifty-five million, five hundred thirty thousand, two hundred eighty".