66847250233 has 2 divisors, whose sum is σ = 66847250234. Its totient is φ = 66847250232.

The previous prime is 66847250203. The next prime is 66847250237. The reversal of 66847250233 is 33205274866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66436093504 + 411156729 = 257752^2 + 20277^2 .

It is a cyclic number.

It is not a de Polignac number, because 66847250233 - 2¹⁷ = 66847119161 is a prime.

It is not a weakly prime, because it can be changed into another prime (66847250237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33423625116 + 33423625117.

It is an arithmetic number, because the mean of its divisors is an integer number (33423625117).

Almost surely, 2^66847250233 is an apocalyptic number.

It is an amenable number.

66847250233 is a deficient number, since it is larger than the sum of its proper divisors (1).

66847250233 is an equidigital number, since it uses as much as digits as its factorization.

66847250233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 66847250233 in words is "sixty-six billion, eight hundred forty-seven million, two hundred fifty thousand, two hundred thirty-three".