27755135860 has 12 divisors (see below), whose sum is σ = 58285785348. Its totient is φ = 11102054336.

The previous prime is 27755135843. The next prime is 27755135873. The reversal of 27755135860 is 6853155772.

It can be written as a sum of positive squares in 2 ways, for example, as 15160011876 + 12595123984 = 123126^2 + 112228^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 693878377 + ... + 693878416.

It is an arithmetic number, because the mean of its divisors is an integer number (4857148779).

Almost surely, 2^27755135860 is an apocalyptic number.

27755135860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27755135860 is an abundant number, since it is smaller than the sum of its proper divisors (30530649488).

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

27755135860 is a wasteful number, since it uses less digits than its factorization.

27755135860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387756802 (or 1387756800 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 27755135860 in words is "twenty-seven billion, seven hundred fifty-five million, one hundred thirty-five thousand, eight hundred sixty".