66189906059 has 2 divisors, whose sum is σ = 66189906060. Its totient is φ = 66189906058.

The previous prime is 66189905953. The next prime is 66189906061. The reversal of 66189906059 is 95060998166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66189906059 - 2²⁸ = 65921470603 is a prime.

It is a super-2 number, since 2×66189906059² (a number of 22 digits) contains 22 as substring.

Together with 66189906061, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66189905989 and 66189906007.

It is not a weakly prime, because it can be changed into another prime (66189906089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33094953029 + 33094953030.

It is an arithmetic number, because the mean of its divisors is an integer number (33094953030).

Almost surely, 2^66189906059 is an apocalyptic number.

66189906059 is a deficient number, since it is larger than the sum of its proper divisors (1).

66189906059 is an equidigital number, since it uses as much as digits as its factorization.

66189906059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The spelling of 66189906059 in words is "sixty-six billion, one hundred eighty-nine million, nine hundred six thousand, fifty-nine".