27550049845 has 4 divisors (see below), whose sum is σ = 33060059820. Its totient is φ = 22040039872.

The previous prime is 27550049827. The next prime is 27550049867. The reversal of 27550049845 is 54894005572.

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 21796979044 + 5753070801 = 147638^2 + 75849^2 .

It is a cyclic number.

It is not a de Polignac number, because 27550049845 - 2¹¹ = 27550047797 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 2755004980 + ... + 2755004989.

It is an arithmetic number, because the mean of its divisors is an integer number (8265014955).

Almost surely, 2^27550049845 is an apocalyptic number.

It is an amenable number.

27550049845 is a deficient number, since it is larger than the sum of its proper divisors (5510009975).

27550049845 is an equidigital number, since it uses as much as digits as its factorization.

27550049845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510009974.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 27550049845 in words is "twenty-seven billion, five hundred fifty million, forty-nine thousand, eight hundred forty-five".