27731842227 has 6 divisors (see below), whose sum is σ = 40057105452. Its totient is φ = 18487894812.

The previous prime is 27731842219. The next prime is 27731842249. The reversal of 27731842227 is 72224813772.

27731842227 is a `hidden beast` number, since 2 + 77 + 318 + 42 + 227 = 666.

It is not a de Polignac number, because 27731842227 - 2³ = 27731842219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27731842207) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1540657893 + ... + 1540657910.

It is an arithmetic number, because the mean of its divisors is an integer number (6676184242).

Almost surely, 2^27731842227 is an apocalyptic number.

27731842227 is a deficient number, since it is larger than the sum of its proper divisors (12325263225).

27731842227 is a wasteful number, since it uses less digits than its factorization.

27731842227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081315809 (or 3081315806 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The spelling of 27731842227 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred forty-two thousand, two hundred twenty-seven".