9665555413 has 2 divisors, whose sum is σ = 9665555414. Its totient is φ = 9665555412.

The previous prime is 9665555369. The next prime is 9665555429. The reversal of 9665555413 is 3145555669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6294359569 + 3371195844 = 79337^2 + 58062^2 .

It is an emirp because it is prime and its reverse (3145555669) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9665555413 is a prime.

It is a super-2 number, since 2×9665555413² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9665553413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832777706 + 4832777707.

It is an arithmetic number, because the mean of its divisors is an integer number (4832777707).

Almost surely, 2^9665555413 is an apocalyptic number.

It is an amenable number.

9665555413 is a deficient number, since it is larger than the sum of its proper divisors (1).

9665555413 is an equidigital number, since it uses as much as digits as its factorization.

9665555413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430000, while the sum is 49.

The square root of 9665555413 is about 98313.5566084352. The cubic root of 9665555413 is about 2130.1438780311.

The spelling of 9665555413 in words is "nine billion, six hundred sixty-five million, five hundred fifty-five thousand, four hundred thirteen".