9995897229709 has 2 divisors, whose sum is σ = 9995897229710. Its totient is φ = 9995897229708.

The previous prime is 9995897229707. The next prime is 9995897229727. The reversal of 9995897229709 is 9079227985999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8147724954084 + 1848172275625 = 2854422^2 + 1359475^2 .

It is a cyclic number.

It is not a de Polignac number, because 9995897229709 - 2¹ = 9995897229707 is a prime.

It is a super-2 number, since 2×9995897229709² (a number of 27 digits) contains 22 as substring.

Together with 9995897229707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9995897229707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997948614854 + 4997948614855.

It is an arithmetic number, because the mean of its divisors is an integer number (4997948614855).

Almost surely, 2^{9995897229709} is an apocalyptic number.

It is an amenable number.

9995897229709 is a deficient number, since it is larger than the sum of its proper divisors (1).

9995897229709 is an equidigital number, since it uses as much as digits as its factorization.

9995897229709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4166497440, while the sum is 85.

The spelling of 9995897229709 in words is "nine trillion, nine hundred ninety-five billion, eight hundred ninety-seven million, two hundred twenty-nine thousand, seven hundred nine".