27506856057 has 4 divisors (see below), whose sum is σ = 36675808080. Its totient is φ = 18337904036.

The previous prime is 27506856053. The next prime is 27506856059. The reversal of 27506856057 is 75065860572.

It is a happy number.

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 27506856057 - 2² = 27506856053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27506856053) 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, 4584476007 + ... + 4584476012.

It is an arithmetic number, because the mean of its divisors is an integer number (9168952020).

Almost surely, 2^27506856057 is an apocalyptic number.

It is an amenable number.

27506856057 is a deficient number, since it is larger than the sum of its proper divisors (9168952023).

27506856057 is an equidigital number, since it uses as much as digits as its factorization.

27506856057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168952022.

The product of its (nonzero) digits is 3528000, while the sum is 51.

The spelling of 27506856057 in words is "twenty-seven billion, five hundred six million, eight hundred fifty-six thousand, fifty-seven".