27438287347 has 4 divisors (see below), whose sum is σ = 27785607520. Its totient is φ = 27090967176.

The previous prime is 27438287297. The next prime is 27438287377. The reversal of 27438287347 is 74378283472.

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

It is a cyclic number.

It is not a de Polignac number, because 27438287347 - 2¹⁵ = 27438254579 is a prime.

It is a super-2 number, since 2×27438287347² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27438287377) 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 3 ways as a sum of consecutive naturals, for example, 173659968 + ... + 173660125.

It is an arithmetic number, because the mean of its divisors is an integer number (6946401880).

Almost surely, 2^27438287347 is an apocalyptic number.

27438287347 is a deficient number, since it is larger than the sum of its proper divisors (347320173).

27438287347 is an equidigital number, since it uses as much as digits as its factorization.

27438287347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347320172.

The product of its digits is 12644352, while the sum is 55.

The spelling of 27438287347 in words is "twenty-seven billion, four hundred thirty-eight million, two hundred eighty-seven thousand, three hundred forty-seven".