66020226266177 has 2 divisors, whose sum is σ = 66020226266178. Its totient is φ = 66020226266176.

The previous prime is 66020226266161. The next prime is 66020226266227. The reversal of 66020226266177 is 77166262202066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60541331050561 + 5478895215616 = 7780831^2 + 2340704^2 .

It is a cyclic number.

It is not a de Polignac number, because 66020226266177 - 2⁴ = 66020226266161 is a prime.

It is not a weakly prime, because it can be changed into another prime (66020226266107) 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, 33010113133088 + 33010113133089.

It is an arithmetic number, because the mean of its divisors is an integer number (33010113133089).

Almost surely, 2^{66020226266177} is an apocalyptic number.

It is an amenable number.

66020226266177 is a deficient number, since it is larger than the sum of its proper divisors (1).

66020226266177 is an equidigital number, since it uses as much as digits as its factorization.

66020226266177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 66020226266177 in words is "sixty-six trillion, twenty billion, two hundred twenty-six million, two hundred sixty-six thousand, one hundred seventy-seven".