27657020005 has 8 divisors (see below), whose sum is σ = 34332852600. Its totient is φ = 21362663616.

The previous prime is 27657019969. The next prime is 27657020057. The reversal of 27657020005 is 50002075672.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2235587524 + 25421432481 = 47282^2 + 159441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27657020005 - 2²³ = 27648631397 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 95368890 + ... + 95369179.

It is an arithmetic number, because the mean of its divisors is an integer number (4291606575).

Almost surely, 2^27657020005 is an apocalyptic number.

It is an amenable number.

27657020005 is a deficient number, since it is larger than the sum of its proper divisors (6675832595).

27657020005 is a wasteful number, since it uses less digits than its factorization.

27657020005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190738103.

The product of its (nonzero) digits is 29400, while the sum is 34.

Adding to 27657020005 its reverse (50002075672), we get a palindrome (77659095677).

The spelling of 27657020005 in words is "twenty-seven billion, six hundred fifty-seven million, twenty thousand, five".