866763832003673 has 2 divisors, whose sum is σ = 866763832003674. Its totient is φ = 866763832003672.

The previous prime is 866763832003603. The next prime is 866763832003757. The reversal of 866763832003673 is 376300238367668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865717165917184 + 1046666086489 = 29423072^2 + 1023067^2 .

It is a cyclic number.

It is not a de Polignac number, because 866763832003673 - 2¹⁴ = 866763831987289 is a prime.

It is a super-2 number, since 2×866763832003673² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (866763832003603) 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, 433381916001836 + 433381916001837.

It is an arithmetic number, because the mean of its divisors is an integer number (433381916001837).

Almost surely, 2^{866763832003673} is an apocalyptic number.

It is an amenable number.

866763832003673 is a deficient number, since it is larger than the sum of its proper divisors (1).

866763832003673 is an equidigital number, since it uses as much as digits as its factorization.

866763832003673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 658409472, while the sum is 68.

The spelling of 866763832003673 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, eight hundred thirty-two million, three thousand, six hundred seventy-three".