71683956488 has 16 divisors (see below), whose sum is σ = 134885740860. Its totient is φ = 35714425600.

The previous prime is 71683956479. The next prime is 71683956499. The reversal of 71683956488 is 88465938617.

It can be written as a sum of positive squares in 2 ways, for example, as 71437529284 + 246427204 = 267278^2 + 15698^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15941693 + ... + 15946188.

Almost surely, 2^71683956488 is an apocalyptic number.

It is an amenable number.

71683956488 is a deficient number, since it is larger than the sum of its proper divisors (63201784372).

71683956488 is a wasteful number, since it uses less digits than its factorization.

71683956488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888168 (or 31888164 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 65.

The spelling of 71683956488 in words is "seventy-one billion, six hundred eighty-three million, nine hundred fifty-six thousand, four hundred eighty-eight".