27247983969 has 4 divisors (see below), whose sum is σ = 36330645296. Its totient is φ = 18165322644.

The previous prime is 27247983871. The next prime is 27247983989. The reversal of 27247983969 is 96938974272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27247983969 - 2⁸ = 27247983713 is a prime.

It is a super-2 number, since 2×27247983969² (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 (27247983989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4541330659 + ... + 4541330664.

It is an arithmetic number, because the mean of its divisors is an integer number (9082661324).

Almost surely, 2^27247983969 is an apocalyptic number.

It is an amenable number.

27247983969 is a deficient number, since it is larger than the sum of its proper divisors (9082661327).

27247983969 is an equidigital number, since it uses as much as digits as its factorization.

27247983969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082661326.

The product of its digits is 82301184, while the sum is 66.

The spelling of 27247983969 in words is "twenty-seven billion, two hundred forty-seven million, nine hundred eighty-three thousand, nine hundred sixty-nine".