27827575500 has 48 divisors (see below), whose sum is σ = 81033904224. Its totient is φ = 7420686400.

The previous prime is 27827575499. The next prime is 27827575507. The reversal of 27827575500 is 557572872.

It is a self number, because there is not a number n which added to its sum of digits gives 27827575500.

It is not an unprimeable number, because it can be changed into a prime (27827575507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9274359 + ... + 9277358.

It is an arithmetic number, because the mean of its divisors is an integer number (1688206338).

Almost surely, 2^27827575500 is an apocalyptic number.

27827575500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27827575500 is an abundant number, since it is smaller than the sum of its proper divisors (53206328724).

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

27827575500 is a wasteful number, since it uses less digits than its factorization.

27827575500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18551739 (or 18551727 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 48.

The spelling of 27827575500 in words is "twenty-seven billion, eight hundred twenty-seven million, five hundred seventy-five thousand, five hundred".