66197665363 has 2 divisors, whose sum is σ = 66197665364. Its totient is φ = 66197665362.

The previous prime is 66197665361. The next prime is 66197665397. The reversal of 66197665363 is 36356679166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66197665363 - 2¹ = 66197665361 is a prime.

Together with 66197665361, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 66197665298 and 66197665307.

It is not a weakly prime, because it can be changed into another prime (66197665361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33098832681 + 33098832682.

It is an arithmetic number, because the mean of its divisors is an integer number (33098832682).

Almost surely, 2^66197665363 is an apocalyptic number.

66197665363 is a deficient number, since it is larger than the sum of its proper divisors (1).

66197665363 is an equidigital number, since it uses as much as digits as its factorization.

66197665363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 58.

The spelling of 66197665363 in words is "sixty-six billion, one hundred ninety-seven million, six hundred sixty-five thousand, three hundred sixty-three".