66470092217 has 2 divisors, whose sum is σ = 66470092218. Its totient is φ = 66470092216.

The previous prime is 66470092193. The next prime is 66470092261. The reversal of 66470092217 is 71229007466.

It is an a-pointer prime, because the next prime (66470092261) can be obtained adding 66470092217 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47371957801 + 19098134416 = 217651^2 + 138196^2 .

It is a cyclic number.

It is not a de Polignac number, because 66470092217 - 2⁶ = 66470092153 is a prime.

It is not a weakly prime, because it can be changed into another prime (66470092277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33235046108 + 33235046109.

It is an arithmetic number, because the mean of its divisors is an integer number (33235046109).

Almost surely, 2^66470092217 is an apocalyptic number.

It is an amenable number.

66470092217 is a deficient number, since it is larger than the sum of its proper divisors (1).

66470092217 is an equidigital number, since it uses as much as digits as its factorization.

66470092217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 66470092217 in words is "sixty-six billion, four hundred seventy million, ninety-two thousand, two hundred seventeen".