27206241217 has 2 divisors, whose sum is σ = 27206241218. Its totient is φ = 27206241216.

The previous prime is 27206241157. The next prime is 27206241253. The reversal of 27206241217 is 71214260272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25293403521 + 1912837696 = 159039^2 + 43736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27206241217 is a prime.

It is a super-2 number, since 2×27206241217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27206241017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13603120608 + 13603120609.

It is an arithmetic number, because the mean of its divisors is an integer number (13603120609).

Almost surely, 2^27206241217 is an apocalyptic number.

It is an amenable number.

27206241217 is a deficient number, since it is larger than the sum of its proper divisors (1).

27206241217 is an equidigital number, since it uses as much as digits as its factorization.

27206241217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 27206241217 in words is "twenty-seven billion, two hundred six million, two hundred forty-one thousand, two hundred seventeen".