71710640473 has 8 divisors (see below), whose sum is σ = 75931405128. Its totient is φ = 67490152704.

The previous prime is 71710640453. The next prime is 71710640483. The reversal of 71710640473 is 37404601717.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13125826624 + 58584813849 = 114568^2 + 242043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71710640473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71710640453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723415 + ... + 816547.

It is an arithmetic number, because the mean of its divisors is an integer number (9491425641).

Almost surely, 2^71710640473 is an apocalyptic number.

It is an amenable number.

71710640473 is a deficient number, since it is larger than the sum of its proper divisors (4220764655).

71710640473 is a wasteful number, since it uses less digits than its factorization.

71710640473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138443.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 71710640473 in words is "seventy-one billion, seven hundred ten million, six hundred forty thousand, four hundred seventy-three".