66650470163 has 2 divisors, whose sum is σ = 66650470164. Its totient is φ = 66650470162.

The previous prime is 66650470157. The next prime is 66650470169. The reversal of 66650470163 is 36107405666.

It is a balanced prime because it is at equal distance from previous prime (66650470157) and next prime (66650470169).

It is a cyclic number.

It is not a de Polignac number, because 66650470163 - 2¹⁸ = 66650208019 is a prime.

It is not a weakly prime, because it can be changed into another prime (66650470169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33325235081 + 33325235082.

It is an arithmetic number, because the mean of its divisors is an integer number (33325235082).

Almost surely, 2^66650470163 is an apocalyptic number.

66650470163 is a deficient number, since it is larger than the sum of its proper divisors (1).

66650470163 is an equidigital number, since it uses as much as digits as its factorization.

66650470163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 66650470163 in words is "sixty-six billion, six hundred fifty million, four hundred seventy thousand, one hundred sixty-three".