9835897694009 has 2 divisors, whose sum is σ = 9835897694010. Its totient is φ = 9835897694008.

The previous prime is 9835897693967. The next prime is 9835897694011. The reversal of 9835897694009 is 9004967985389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9818176759609 + 17720934400 = 3133397^2 + 133120^2 .

It is an emirp because it is prime and its reverse (9004967985389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9835897694009 - 2²⁴ = 9835880916793 is a prime.

Together with 9835897694011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9835897694039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4917948847004 + 4917948847005.

It is an arithmetic number, because the mean of its divisors is an integer number (4917948847005).

Almost surely, 2^{9835897694009} is an apocalyptic number.

It is an amenable number.

9835897694009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9835897694009 is an equidigital number, since it uses as much as digits as its factorization.

9835897694009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058158080, while the sum is 77.

The spelling of 9835897694009 in words is "nine trillion, eight hundred thirty-five billion, eight hundred ninety-seven million, six hundred ninety-four thousand, nine".