71168075668 has 6 divisors (see below), whose sum is σ = 124544132426. Its totient is φ = 35584037832.

The previous prime is 71168075663. The next prime is 71168075669. The reversal of 71168075668 is 86657086117.

It can be written as a sum of positive squares in only one way, i.e., 50403842064 + 20764233604 = 224508^2 + 144098^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71168075663) 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, 8896009455 + ... + 8896009462.

Almost surely, 2^71168075668 is an apocalyptic number.

It is an amenable number.

71168075668 is a deficient number, since it is larger than the sum of its proper divisors (53376056758).

71168075668 is a wasteful number, since it uses less digits than its factorization.

71168075668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17792018921 (or 17792018919 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 71168075668 in words is "seventy-one billion, one hundred sixty-eight million, seventy-five thousand, six hundred sixty-eight".