866788526375377 has 2 divisors, whose sum is σ = 866788526375378. Its totient is φ = 866788526375376.

The previous prime is 866788526375287. The next prime is 866788526375393. The reversal of 866788526375377 is 773573625887668.

866788526375377 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., 860683273459216 + 6105252916161 = 29337404^2 + 2470881^2 .

It is a cyclic number.

It is not a de Polignac number, because 866788526375377 - 2³¹ = 866786378891729 is a prime.

It is not a weakly prime, because it can be changed into another prime (866788526345377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433394263187688 + 433394263187689.

It is an arithmetic number, because the mean of its divisors is an integer number (433394263187689).

Almost surely, 2^{866788526375377} is an apocalyptic number.

It is an amenable number.

866788526375377 is a deficient number, since it is larger than the sum of its proper divisors (1).

866788526375377 is an equidigital number, since it uses as much as digits as its factorization.

866788526375377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119489126400, while the sum is 88.

The spelling of 866788526375377 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, three hundred seventy-five thousand, three hundred seventy-seven".