27216005237 has 2 divisors, whose sum is σ = 27216005238. Its totient is φ = 27216005236.

The previous prime is 27216005209. The next prime is 27216005269. The reversal of 27216005237 is 73250061272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26527939876 + 688065361 = 162874^2 + 26231^2 .

It is a cyclic number.

It is not a de Polignac number, because 27216005237 - 2¹⁴ = 27215988853 is a prime.

It is a super-2 number, since 2×27216005237² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27216005197 and 27216005206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27216004237) 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 as a sum of consecutive naturals, namely, 13608002618 + 13608002619.

It is an arithmetic number, because the mean of its divisors is an integer number (13608002619).

Almost surely, 2^27216005237 is an apocalyptic number.

It is an amenable number.

27216005237 is a deficient number, since it is larger than the sum of its proper divisors (1).

27216005237 is an equidigital number, since it uses as much as digits as its factorization.

27216005237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 27216005237 in words is "twenty-seven billion, two hundred sixteen million, five thousand, two hundred thirty-seven".