27731330005 has 8 divisors (see below), whose sum is σ = 33278873400. Its totient is φ = 22184212416.

The previous prime is 27731329999. The next prime is 27731330027. The reversal of 27731330005 is 50003313772.

It can be written as a sum of positive squares in 4 ways, for example, as 1970116996 + 25761213009 = 44386^2 + 160503^2 .

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 27731330005 - 2⁷ = 27731329877 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60691 + ... + 243199.

It is an arithmetic number, because the mean of its divisors is an integer number (4159859175).

Almost surely, 2^27731330005 is an apocalyptic number.

It is an amenable number.

27731330005 is a deficient number, since it is larger than the sum of its proper divisors (5547543395).

27731330005 is a wasteful number, since it uses less digits than its factorization.

27731330005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212903.

The product of its (nonzero) digits is 13230, while the sum is 31.

Adding to 27731330005 its reverse (50003313772), we get a palindrome (77734643777).

The spelling of 27731330005 in words is "twenty-seven billion, seven hundred thirty-one million, three hundred thirty thousand, five".