27888352641 has 6 divisors (see below), whose sum is σ = 40283176050. Its totient is φ = 18592235088.

The previous prime is 27888352579. The next prime is 27888352669. The reversal of 27888352641 is 14625388872.

27888352641 is a `hidden beast` number, since 2 + 78 + 8 + 8 + 3 + 526 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18311773041 + 9576579600 = 135321^2 + 97860^2 .

It is not a de Polignac number, because 27888352641 - 2²⁷ = 27754134913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27888352691) 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 5 ways as a sum of consecutive naturals, for example, 1549352916 + ... + 1549352933.

It is an arithmetic number, because the mean of its divisors is an integer number (6713862675).

Almost surely, 2^27888352641 is an apocalyptic number.

It is an amenable number.

27888352641 is a deficient number, since it is larger than the sum of its proper divisors (12394823409).

27888352641 is a wasteful number, since it uses less digits than its factorization.

27888352641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098705855 (or 3098705852 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 27888352641 in words is "twenty-seven billion, eight hundred eighty-eight million, three hundred fifty-two thousand, six hundred forty-one".