71816668824 has 32 divisors (see below), whose sum is σ = 185732766000. Its totient is φ = 23113410432.

The previous prime is 71816668801. The next prime is 71816668831. The reversal of 71816668824 is 42886661817.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 51591739 + ... + 51593130.

Almost surely, 2^71816668824 is an apocalyptic number.

It is an amenable number.

71816668824 is an abundant number, since it is smaller than the sum of its proper divisors (113916097176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71816668824 is a wasteful number, since it uses less digits than its factorization.

71816668824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103184907 (or 103184903 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 57.

The spelling of 71816668824 in words is "seventy-one billion, eight hundred sixteen million, six hundred sixty-eight thousand, eight hundred twenty-four".