27726644224165 has 8 divisors (see below), whose sum is σ = 33296065744248. Its totient is φ = 22165253595840.

The previous prime is 27726644224163. The next prime is 27726644224171. The reversal of 27726644224165 is 56142244662772.

It can be written as a sum of positive squares in 4 ways, for example, as 8083319961924 + 19643324262241 = 2843118^2 + 4432079^2 .

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

It is not a de Polignac number, because 27726644224165 - 2¹ = 27726644224163 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 (27726644224163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007715342 + ... + 2007729151.

It is an arithmetic number, because the mean of its divisors is an integer number (4162008218031).

Almost surely, 2^{27726644224165} is an apocalyptic number.

It is an amenable number.

27726644224165 is a deficient number, since it is larger than the sum of its proper divisors (5569421520083).

27726644224165 is a wasteful number, since it uses less digits than its factorization.

27726644224165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015445879.

The product of its digits is 54190080, while the sum is 58.

The spelling of 27726644224165 in words is "twenty-seven trillion, seven hundred twenty-six billion, six hundred forty-four million, two hundred twenty-four thousand, one hundred sixty-five".