71673339720 has 32 divisors (see below), whose sum is σ = 215020019520. Its totient is φ = 19112890560.

The previous prime is 71673339709. The next prime is 71673339739. The reversal of 71673339720 is 2793337617.

It is a self number, because there is not a number n which added to its sum of digits gives 71673339720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298638796 + ... + 298639035.

It is an arithmetic number, because the mean of its divisors is an integer number (6719375610).

Almost surely, 2^71673339720 is an apocalyptic number.

It is an amenable number.

71673339720 is an abundant number, since it is smaller than the sum of its proper divisors (143346679800).

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

71673339720 is a wasteful number, since it uses less digits than its factorization.

71673339720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597277845 (or 597277841 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 48.

The spelling of 71673339720 in words is "seventy-one billion, six hundred seventy-three million, three hundred thirty-nine thousand, seven hundred twenty".