9659945117 has 2 divisors, whose sum is σ = 9659945118. Its totient is φ = 9659945116.

The previous prime is 9659945107. The next prime is 9659945129. The reversal of 9659945117 is 7115499569.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5974362436 + 3685582681 = 77294^2 + 60709^2 .

It is an emirp because it is prime and its reverse (7115499569) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9659945117 - 2²⁴ = 9643167901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9659945107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4829972558 + 4829972559.

It is an arithmetic number, because the mean of its divisors is an integer number (4829972559).

Almost surely, 2^9659945117 is an apocalyptic number.

It is an amenable number.

9659945117 is a deficient number, since it is larger than the sum of its proper divisors (1).

9659945117 is an equidigital number, since it uses as much as digits as its factorization.

9659945117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 56.

The square root of 9659945117 is about 98285.0197995605. The cubic root of 9659945117 is about 2129.7316564825.

The spelling of 9659945117 in words is "nine billion, six hundred fifty-nine million, nine hundred forty-five thousand, one hundred seventeen".