66590555509627 has 2 divisors, whose sum is σ = 66590555509628. Its totient is φ = 66590555509626.

The previous prime is 66590555509561. The next prime is 66590555509637. The reversal of 66590555509627 is 72690555509566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66590555509627 - 2¹¹ = 66590555507579 is a prime.

It is not a weakly prime, because it can be changed into another prime (66590555509637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33295277754813 + 33295277754814.

It is an arithmetic number, because the mean of its divisors is an integer number (33295277754814).

Almost surely, 2^{66590555509627} is an apocalyptic number.

66590555509627 is a deficient number, since it is larger than the sum of its proper divisors (1).

66590555509627 is an equidigital number, since it uses as much as digits as its factorization.

66590555509627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 765450000, while the sum is 70.

The spelling of 66590555509627 in words is "sixty-six trillion, five hundred ninety billion, five hundred fifty-five million, five hundred nine thousand, six hundred twenty-seven".