9617747121 has 12 divisors (see below), whose sum is σ = 13893222772. Its totient is φ = 6411406176.

The previous prime is 9617747101. The next prime is 9617747141. The reversal of 9617747121 is 1217477169.

9617747121 is a `hidden beast` number, since 9 + 6 + 177 + 471 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (9617747101) and next prime (9617747141).

It can be written as a sum of positive squares in 2 ways, for example, as 8794688400 + 823058721 = 93780^2 + 28689^2 .

It is not a de Polignac number, because 9617747121 - 2⁵ = 9617747089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9617747101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171255 + ... + 220371.

Almost surely, 2^9617747121 is an apocalyptic number.

It is an amenable number.

9617747121 is a deficient number, since it is larger than the sum of its proper divisors (4275475651).

9617747121 is a wasteful number, since it uses less digits than its factorization.

9617747121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70880 (or 70877 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 9617747121 is about 98070.1132914610. The cubic root of 9617747121 is about 2126.6259939740.

The spelling of 9617747121 in words is "nine billion, six hundred seventeen million, seven hundred forty-seven thousand, one hundred twenty-one".