27318315806 has 4 divisors (see below), whose sum is σ = 40977473712. Its totient is φ = 13659157902.

The previous prime is 27318315779. The next prime is 27318315809. The reversal of 27318315806 is 60851381372.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27318315809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6829578950 + ... + 6829578953.

It is an arithmetic number, because the mean of its divisors is an integer number (10244368428).

Almost surely, 2^27318315806 is an apocalyptic number.

27318315806 is a deficient number, since it is larger than the sum of its proper divisors (13659157906).

27318315806 is a wasteful number, since it uses less digits than its factorization.

27318315806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659157905.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 27318315806 in words is "twenty-seven billion, three hundred eighteen million, three hundred fifteen thousand, eight hundred six".