71688324067 has 2 divisors, whose sum is σ = 71688324068. Its totient is φ = 71688324066.

The previous prime is 71688324049. The next prime is 71688324089. The reversal of 71688324067 is 76042388617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71688324067 - 2¹⁹ = 71687799779 is a prime.

It is a super-2 number, since 2×71688324067² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71688324007) 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, 35844162033 + 35844162034.

It is an arithmetic number, because the mean of its divisors is an integer number (35844162034).

Almost surely, 2^71688324067 is an apocalyptic number.

71688324067 is a deficient number, since it is larger than the sum of its proper divisors (1).

71688324067 is an equidigital number, since it uses as much as digits as its factorization.

71688324067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 71688324067 in words is "seventy-one billion, six hundred eighty-eight million, three hundred twenty-four thousand, sixty-seven".