866786462176273 has 2 divisors, whose sum is σ = 866786462176274. Its totient is φ = 866786462176272.

The previous prime is 866786462176247. The next prime is 866786462176277. The reversal of 866786462176273 is 372671264687668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 782366603647489 + 84419858528784 = 27970817^2 + 9188028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866786462176273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866786462176193 and 866786462176202.

It is not a weakly prime, because it can be changed into another prime (866786462176277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433393231088136 + 433393231088137.

It is an arithmetic number, because the mean of its divisors is an integer number (433393231088137).

Almost surely, 2^{866786462176273} is an apocalyptic number.

It is an amenable number.

866786462176273 is a deficient number, since it is larger than the sum of its proper divisors (1).

866786462176273 is an equidigital number, since it uses as much as digits as its factorization.

866786462176273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8193540096, while the sum is 79.

The spelling of 866786462176273 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-two million, one hundred seventy-six thousand, two hundred seventy-three".