71320617768 has 48 divisors (see below), whose sum is σ = 183250831680. Its totient is φ = 23131000512.

The previous prime is 71320617757. The next prime is 71320617773. The reversal of 71320617768 is 86771602317.

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 11 ways as a sum of consecutive naturals, for example, 1052496 + ... + 1118207.

It is an arithmetic number, because the mean of its divisors is an integer number (3817725660).

Almost surely, 2^71320617768 is an apocalyptic number.

It is an amenable number.

71320617768 is an abundant number, since it is smaller than the sum of its proper divisors (111930213912).

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

71320617768 is a wasteful number, since it uses less digits than its factorization.

71320617768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170786 (or 2170745 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 71320617768 in words is "seventy-one billion, three hundred twenty million, six hundred seventeen thousand, seven hundred sixty-eight".