71563181626163 has 2 divisors, whose sum is σ = 71563181626164. Its totient is φ = 71563181626162.

The previous prime is 71563181626103. The next prime is 71563181626231. The reversal of 71563181626163 is 36162618136517.

It is a weak prime.

It is an emirp because it is prime and its reverse (36162618136517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71563181626163 - 2⁶ = 71563181626099 is a prime.

It is a super-2 number, since 2×71563181626163² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71563181626099 and 71563181626108.

It is not a weakly prime, because it can be changed into another prime (71563181626103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35781590813081 + 35781590813082.

It is an arithmetic number, because the mean of its divisors is an integer number (35781590813082).

Almost surely, 2^{71563181626163} is an apocalyptic number.

71563181626163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71563181626163 is an equidigital number, since it uses as much as digits as its factorization.

71563181626163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The spelling of 71563181626163 in words is "seventy-one trillion, five hundred sixty-three billion, one hundred eighty-one million, six hundred twenty-six thousand, one hundred sixty-three".