66673685363 has 2 divisors, whose sum is σ = 66673685364. Its totient is φ = 66673685362.

The previous prime is 66673685359. The next prime is 66673685387. The reversal of 66673685363 is 36358637666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66673685363 - 2² = 66673685359 is a prime.

It is not a weakly prime, because it can be changed into another prime (66673685563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33336842681 + 33336842682.

It is an arithmetic number, because the mean of its divisors is an integer number (33336842682).

Almost surely, 2^66673685363 is an apocalyptic number.

66673685363 is a deficient number, since it is larger than the sum of its proper divisors (1).

66673685363 is an equidigital number, since it uses as much as digits as its factorization.

66673685363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 59.

The spelling of 66673685363 in words is "sixty-six billion, six hundred seventy-three million, six hundred eighty-five thousand, three hundred sixty-three".