66188295163 has 2 divisors, whose sum is σ = 66188295164. Its totient is φ = 66188295162.

The previous prime is 66188295161. The next prime is 66188295181. The reversal of 66188295163 is 36159288166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66188295163 - 2¹ = 66188295161 is a prime.

Together with 66188295161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66188295161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33094147581 + 33094147582.

It is an arithmetic number, because the mean of its divisors is an integer number (33094147582).

Almost surely, 2^66188295163 is an apocalyptic number.

66188295163 is a deficient number, since it is larger than the sum of its proper divisors (1).

66188295163 is an equidigital number, since it uses as much as digits as its factorization.

66188295163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 55.

The spelling of 66188295163 in words is "sixty-six billion, one hundred eighty-eight million, two hundred ninety-five thousand, one hundred sixty-three".