66680530219 has 2 divisors, whose sum is σ = 66680530220. Its totient is φ = 66680530218.

The previous prime is 66680530181. The next prime is 66680530271. The reversal of 66680530219 is 91203508666.

66680530219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66680530219 - 2¹¹ = 66680528171 is a prime.

It is a super-2 number, since 2×66680530219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66680531219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33340265109 + 33340265110.

It is an arithmetic number, because the mean of its divisors is an integer number (33340265110).

Almost surely, 2^66680530219 is an apocalyptic number.

66680530219 is a deficient number, since it is larger than the sum of its proper divisors (1).

66680530219 is an equidigital number, since it uses as much as digits as its factorization.

66680530219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 66680530219 in words is "sixty-six billion, six hundred eighty million, five hundred thirty thousand, two hundred nineteen".