27973417647 has 8 divisors (see below), whose sum is σ = 42626160256. Its totient is φ = 15984810072.

The previous prime is 27973417643. The next prime is 27973417663. The reversal of 27973417647 is 74671437972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27973417647 - 2² = 27973417643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27973417643) 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 7 ways as a sum of consecutive naturals, for example, 666033733 + ... + 666033774.

It is an arithmetic number, because the mean of its divisors is an integer number (5328270032).

Almost surely, 2^27973417647 is an apocalyptic number.

27973417647 is a deficient number, since it is larger than the sum of its proper divisors (14652742609).

27973417647 is a wasteful number, since it uses less digits than its factorization.

27973417647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332067517.

The product of its digits is 12446784, while the sum is 57.

The spelling of 27973417647 in words is "twenty-seven billion, nine hundred seventy-three million, four hundred seventeen thousand, six hundred forty-seven".