66086897479277 has 2 divisors, whose sum is σ = 66086897479278. Its totient is φ = 66086897479276.

The previous prime is 66086897479201. The next prime is 66086897479279. The reversal of 66086897479277 is 77297479868066.

66086897479277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60183290168521 + 5903607310756 = 7757789^2 + 2429734^2 .

It is a cyclic number.

It is not a de Polignac number, because 66086897479277 - 2¹⁴ = 66086897462893 is a prime.

Together with 66086897479279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66086897479279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33043448739638 + 33043448739639.

It is an arithmetic number, because the mean of its divisors is an integer number (33043448739639).

Almost surely, 2^{66086897479277} is an apocalyptic number.

It is an amenable number.

66086897479277 is a deficient number, since it is larger than the sum of its proper divisors (1).

66086897479277 is an equidigital number, since it uses as much as digits as its factorization.

66086897479277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21508042752, while the sum is 86.

The spelling of 66086897479277 in words is "sixty-six trillion, eighty-six billion, eight hundred ninety-seven million, four hundred seventy-nine thousand, two hundred seventy-seven".