71671344666 has 32 divisors (see below), whose sum is σ = 148047963840. Its totient is φ = 23118585984.

The previous prime is 71671344659. The next prime is 71671344671. The reversal of 71671344666 is 66644317617.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520496 + ... + 1566923.

It is an arithmetic number, because the mean of its divisors is an integer number (4626498870).

Almost surely, 2^71671344666 is an apocalyptic number.

71671344666 is an abundant number, since it is smaller than the sum of its proper divisors (76376619174).

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

71671344666 is a wasteful number, since it uses less digits than its factorization.

71671344666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087550.

The product of its digits is 3048192, while the sum is 51.

The spelling of 71671344666 in words is "seventy-one billion, six hundred seventy-one million, three hundred forty-four thousand, six hundred sixty-six".