71719034465 has 12 divisors (see below), whose sum is σ = 93192308604. Its totient is φ = 52961747904.

The previous prime is 71719034417. The next prime is 71719034477. The reversal of 71719034465 is 56443091717.

It can be written as a sum of positive squares in 6 ways, for example, as 13661168161 + 58057866304 = 116881^2 + 240952^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71719034465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42436454 + ... + 42438143.

It is an arithmetic number, because the mean of its divisors is an integer number (7766025717).

Almost surely, 2^71719034465 is an apocalyptic number.

It is an amenable number.

71719034465 is a deficient number, since it is larger than the sum of its proper divisors (21473274139).

71719034465 is a wasteful number, since it uses less digits than its factorization.

71719034465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84874628 (or 84874615 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 71719034465 in words is "seventy-one billion, seven hundred nineteen million, thirty-four thousand, four hundred sixty-five".