66847662367 has 2 divisors, whose sum is σ = 66847662368. Its totient is φ = 66847662366.

The previous prime is 66847662353. The next prime is 66847662379. The reversal of 66847662367 is 76326674866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66847662367 - 2¹⁵ = 66847629599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66847662307) 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, 33423831183 + 33423831184.

It is an arithmetic number, because the mean of its divisors is an integer number (33423831184).

Almost surely, 2^66847662367 is an apocalyptic number.

66847662367 is a deficient number, since it is larger than the sum of its proper divisors (1).

66847662367 is an equidigital number, since it uses as much as digits as its factorization.

66847662367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 61.

The spelling of 66847662367 in words is "sixty-six billion, eight hundred forty-seven million, six hundred sixty-two thousand, three hundred sixty-seven".