8636861311073 has 2 divisors, whose sum is σ = 8636861311074. Its totient is φ = 8636861311072.

The previous prime is 8636861311009. The next prime is 8636861311129. The reversal of 8636861311073 is 3701131686368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7563341523409 + 1073519787664 = 2750153^2 + 1036108^2 .

It is a cyclic number.

It is not a de Polignac number, because 8636861311073 - 2⁶ = 8636861311009 is a prime.

It is a super-2 number, since 2×8636861311073² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8636861311003) 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, 4318430655536 + 4318430655537.

It is an arithmetic number, because the mean of its divisors is an integer number (4318430655537).

Almost surely, 2^{8636861311073} is an apocalyptic number.

It is an amenable number.

8636861311073 is a deficient number, since it is larger than the sum of its proper divisors (1).

8636861311073 is an equidigital number, since it uses as much as digits as its factorization.

8636861311073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 8636861311073 in words is "eight trillion, six hundred thirty-six billion, eight hundred sixty-one million, three hundred eleven thousand, seventy-three".