27755502549 has 4 divisors (see below), whose sum is σ = 37007336736. Its totient is φ = 18503668364.

The previous prime is 27755502547. The next prime is 27755502569. The reversal of 27755502549 is 94520555772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27755502549 - 2¹ = 27755502547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27755502547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625917089 + ... + 4625917094.

It is an arithmetic number, because the mean of its divisors is an integer number (9251834184).

Almost surely, 2^27755502549 is an apocalyptic number.

It is an amenable number.

27755502549 is a deficient number, since it is larger than the sum of its proper divisors (9251834187).

27755502549 is an equidigital number, since it uses as much as digits as its factorization.

27755502549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251834186.

The product of its (nonzero) digits is 4410000, while the sum is 51.

The spelling of 27755502549 in words is "twenty-seven billion, seven hundred fifty-five million, five hundred two thousand, five hundred forty-nine".