66247414229 has 2 divisors, whose sum is σ = 66247414230. Its totient is φ = 66247414228.

The previous prime is 66247414193. The next prime is 66247414273. The reversal of 66247414229 is 92241474266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64165956100 + 2081458129 = 253310^2 + 45623^2 .

It is a cyclic number.

It is not a de Polignac number, because 66247414229 - 2¹⁶ = 66247348693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66247414279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33123707114 + 33123707115.

It is an arithmetic number, because the mean of its divisors is an integer number (33123707115).

Almost surely, 2^66247414229 is an apocalyptic number.

It is an amenable number.

66247414229 is a deficient number, since it is larger than the sum of its proper divisors (1).

66247414229 is an equidigital number, since it uses as much as digits as its factorization.

66247414229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 47.

The spelling of 66247414229 in words is "sixty-six billion, two hundred forty-seven million, four hundred fourteen thousand, two hundred twenty-nine".