866514132073657 has 2 divisors, whose sum is σ = 866514132073658. Its totient is φ = 866514132073656.

The previous prime is 866514132073607. The next prime is 866514132073673. The reversal of 866514132073657 is 756370231415668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698349543100416 + 168164588973241 = 26426304^2 + 12967829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866514132073657 is a prime.

It is not a weakly prime, because it can be changed into another prime (866514132073607) 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, 433257066036828 + 433257066036829.

It is an arithmetic number, because the mean of its divisors is an integer number (433257066036829).

Almost surely, 2^{866514132073657} is an apocalyptic number.

It is an amenable number.

866514132073657 is a deficient number, since it is larger than the sum of its proper divisors (1).

866514132073657 is an equidigital number, since it uses as much as digits as its factorization.

866514132073657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 152409600, while the sum is 64.

The spelling of 866514132073657 in words is "eight hundred sixty-six trillion, five hundred fourteen billion, one hundred thirty-two million, seventy-three thousand, six hundred fifty-seven".