66652606224289 has 2 divisors, whose sum is σ = 66652606224290. Its totient is φ = 66652606224288.

The previous prime is 66652606224287. The next prime is 66652606224299. The reversal of 66652606224289 is 98242260625666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65930616134289 + 721990090000 = 8119767^2 + 849700^2 .

It is a cyclic number.

It is not a de Polignac number, because 66652606224289 - 2¹ = 66652606224287 is a prime.

Together with 66652606224287, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66652606224289.

It is not a weakly prime, because it can be changed into another prime (66652606224287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33326303112144 + 33326303112145.

It is an arithmetic number, because the mean of its divisors is an integer number (33326303112145).

Almost surely, 2^{66652606224289} is an apocalyptic number.

It is an amenable number.

66652606224289 is a deficient number, since it is larger than the sum of its proper divisors (1).

66652606224289 is an equidigital number, since it uses as much as digits as its factorization.

66652606224289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179159040, while the sum is 64.

The spelling of 66652606224289 in words is "sixty-six trillion, six hundred fifty-two billion, six hundred six million, two hundred twenty-four thousand, two hundred eighty-nine".