66678898183 has 2 divisors, whose sum is σ = 66678898184. Its totient is φ = 66678898182.

The previous prime is 66678898163. The next prime is 66678898229. The reversal of 66678898183 is 38189887666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66678898183 - 2⁹ = 66678897671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66678898163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33339449091 + 33339449092.

It is an arithmetic number, because the mean of its divisors is an integer number (33339449092).

Almost surely, 2^66678898183 is an apocalyptic number.

66678898183 is a deficient number, since it is larger than the sum of its proper divisors (1).

66678898183 is an equidigital number, since it uses as much as digits as its factorization.

66678898183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167215104, while the sum is 70.

The spelling of 66678898183 in words is "sixty-six billion, six hundred seventy-eight million, eight hundred ninety-eight thousand, one hundred eighty-three".