71966520208 has 40 divisors (see below), whose sum is σ = 152173385280. Its totient is φ = 32698650240.

The previous prime is 71966520173. The next prime is 71966520251. The reversal of 71966520208 is 80202566917.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353413 + ... + 518491.

It is an arithmetic number, because the mean of its divisors is an integer number (3804334632).

Almost surely, 2^71966520208 is an apocalyptic number.

It is an amenable number.

71966520208 is an abundant number, since it is smaller than the sum of its proper divisors (80206865072).

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

71966520208 is a wasteful number, since it uses less digits than its factorization.

71966520208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167575 (or 167569 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 71966520208 in words is "seventy-one billion, nine hundred sixty-six million, five hundred twenty thousand, two hundred eight".