27816316818 has 16 divisors (see below), whose sum is σ = 55636580160. Its totient is φ = 9271447856.

The previous prime is 27816316807. The next prime is 27816316819. The reversal of 27816316818 is 81861361872.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27816316819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68505 + ... + 245612.

It is an arithmetic number, because the mean of its divisors is an integer number (3477286260).

Almost surely, 2^27816316818 is an apocalyptic number.

27816316818 is an abundant number, since it is smaller than the sum of its proper divisors (27820263342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27816316818 is a wasteful number, since it uses less digits than its factorization.

27816316818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328881.

The product of its digits is 774144, while the sum is 51.

The spelling of 27816316818 in words is "twenty-seven billion, eight hundred sixteen million, three hundred sixteen thousand, eight hundred eighteen".