9479724971717 has 36 divisors (see below), whose sum is σ = 13053454835148. Its totient is φ = 6818583340800.

The previous prime is 9479724971707. The next prime is 9479724971779. The reversal of 9479724971717 is 7171794279749.

It can be written as a sum of positive squares in 2 ways, for example, as 3049235394436 + 6430489577281 = 1746206^2 + 2535841^2 .

It is not a de Polignac number, because 9479724971717 - 2⁴ = 9479724971701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9479724971707) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 61418084 + ... + 61572237.

It is an arithmetic number, because the mean of its divisors is an integer number (362595967643).

Almost surely, 2^{9479724971717} is an apocalyptic number.

It is an amenable number.

9479724971717 is a deficient number, since it is larger than the sum of its proper divisors (3573729863431).

9479724971717 is a wasteful number, since it uses less digits than its factorization.

9479724971717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122990370 (or 122990352 counting only the distinct ones).

The product of its digits is 392073696, while the sum is 74.

The spelling of 9479724971717 in words is "nine trillion, four hundred seventy-nine billion, seven hundred twenty-four million, nine hundred seventy-one thousand, seven hundred seventeen".