9716721343 has 4 divisors (see below), whose sum is σ = 11104824400. Its totient is φ = 8328618288.

The previous prime is 9716721319. The next prime is 9716721361. The reversal of 9716721343 is 3431276179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9716721343 - 2²¹ = 9714624191 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 9716721343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9716721743) 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, 694051518 + ... + 694051531.

It is an arithmetic number, because the mean of its divisors is an integer number (2776206100).

Almost surely, 2^9716721343 is an apocalyptic number.

9716721343 is a deficient number, since it is larger than the sum of its proper divisors (1388103057).

9716721343 is a wasteful number, since it uses less digits than its factorization.

9716721343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388103056.

The product of its digits is 190512, while the sum is 43.

The square root of 9716721343 is about 98573.4312226170. The cubic root of 9716721343 is about 2133.8960002949.

The spelling of 9716721343 in words is "nine billion, seven hundred sixteen million, seven hundred twenty-one thousand, three hundred forty-three".