71641067768 has 16 divisors (see below), whose sum is σ = 134826363000. Its totient is φ = 35687370976.

The previous prime is 71641067767. The next prime is 71641067777. The reversal of 71641067768 is 86776014617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71641067767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16643078 + ... + 16647381.

Almost surely, 2^71641067768 is an apocalyptic number.

It is an amenable number.

71641067768 is a deficient number, since it is larger than the sum of its proper divisors (63185295232).

71641067768 is a wasteful number, since it uses less digits than its factorization.

71641067768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33290734 (or 33290730 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 71641067768 in words is "seventy-one billion, six hundred forty-one million, sixty-seven thousand, seven hundred sixty-eight".