27827182745 has 4 divisors (see below), whose sum is σ = 33392619300. Its totient is φ = 22261746192.

The previous prime is 27827182741. The next prime is 27827182771. The reversal of 27827182745 is 54728172872.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6065917456 + 21761265289 = 77884^2 + 147517^2 .

It is a cyclic number.

It is not a de Polignac number, because 27827182745 - 2² = 27827182741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27827182741) 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, 2782718270 + ... + 2782718279.

It is an arithmetic number, because the mean of its divisors is an integer number (8348154825).

Almost surely, 2^27827182745 is an apocalyptic number.

It is an amenable number.

27827182745 is a deficient number, since it is larger than the sum of its proper divisors (5565436555).

27827182745 is an equidigital number, since it uses as much as digits as its factorization.

27827182745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565436554.

The product of its digits is 3512320, while the sum is 53.

The spelling of 27827182745 in words is "twenty-seven billion, eight hundred twenty-seven million, one hundred eighty-two thousand, seven hundred forty-five".