27919387227 has 32 divisors (see below), whose sum is σ = 39942144000. Its totient is φ = 17294027040.

The previous prime is 27919387219. The next prime is 27919387229. The reversal of 27919387227 is 72278391972.

It is not a de Polignac number, because 27919387227 - 2³ = 27919387219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (27919387229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1466902 + ... + 1485812.

It is an arithmetic number, because the mean of its divisors is an integer number (1248192000).

Almost surely, 2^27919387227 is an apocalyptic number.

27919387227 is a deficient number, since it is larger than the sum of its proper divisors (12022756773).

27919387227 is a wasteful number, since it uses less digits than its factorization.

27919387227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19431.

The product of its digits is 5334336, while the sum is 57.

The spelling of 27919387227 in words is "twenty-seven billion, nine hundred nineteen million, three hundred eighty-seven thousand, two hundred twenty-seven".