27217865713 has 4 divisors (see below), whose sum is σ = 27266731380. Its totient is φ = 27169000048.

The previous prime is 27217865707. The next prime is 27217865743. The reversal of 27217865713 is 31756871272.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14273797729 + 12944067984 = 119473^2 + 113772^2 .

It is a cyclic number.

It is not a de Polignac number, because 27217865713 - 2⁹ = 27217865201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27217865743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24431998 + ... + 24433111.

It is an arithmetic number, because the mean of its divisors is an integer number (6816682845).

Almost surely, 2^27217865713 is an apocalyptic number.

It is an amenable number.

27217865713 is a deficient number, since it is larger than the sum of its proper divisors (48865667).

27217865713 is an equidigital number, since it uses as much as digits as its factorization.

27217865713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48865666.

The product of its digits is 987840, while the sum is 49.

The spelling of 27217865713 in words is "twenty-seven billion, two hundred seventeen million, eight hundred sixty-five thousand, seven hundred thirteen".