66327072108281 has 2 divisors, whose sum is σ = 66327072108282. Its totient is φ = 66327072108280.

The previous prime is 66327072108221. The next prime is 66327072108307. The reversal of 66327072108281 is 18280127072366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66282068304400 + 45003803881 = 8141380^2 + 212141^2 .

It is a cyclic number.

It is not a de Polignac number, because 66327072108281 - 2⁴² = 61929025597177 is a prime.

It is a super-2 number, since 2×66327072108281² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66327072108221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33163536054140 + 33163536054141.

It is an arithmetic number, because the mean of its divisors is an integer number (33163536054141).

Almost surely, 2^{66327072108281} is an apocalyptic number.

It is an amenable number.

66327072108281 is a deficient number, since it is larger than the sum of its proper divisors (1).

66327072108281 is an equidigital number, since it uses as much as digits as its factorization.

66327072108281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 66327072108281 in words is "sixty-six trillion, three hundred twenty-seven billion, seventy-two million, one hundred eight thousand, two hundred eighty-one".