71723032717 has 4 divisors (see below), whose sum is σ = 81969180256. Its totient is φ = 61476885180.

The previous prime is 71723032709. The next prime is 71723032741.

71723032717 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71723032717 - 2³ = 71723032709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71723032717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71723032517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123073759 + ... + 5123073772.

It is an arithmetic number, because the mean of its divisors is an integer number (20492295064).

Almost surely, 2^71723032717 is an apocalyptic number.

It is an amenable number.

71723032717 is a deficient number, since it is larger than the sum of its proper divisors (10246147539).

71723032717 is a wasteful number, since it uses less digits than its factorization.

71723032717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246147538.

The product of its (nonzero) digits is 86436, while the sum is 40.

It can be divided in two parts, 717230 and 32717, that added together give a palindrome (749947).

The spelling of 71723032717 in words is "seventy-one billion, seven hundred twenty-three million, thirty-two thousand, seven hundred seventeen".