9909900099017 has 2 divisors, whose sum is σ = 9909900099018. Its totient is φ = 9909900099016.

The previous prime is 9909900098993. The next prime is 9909900099103. The reversal of 9909900099017 is 7109900099099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9740790808576 + 169109290441 = 3121024^2 + 411229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9909900099017 is a prime.

It is a super-2 number, since 2×9909900099017² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9909900090017) 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, 4954950049508 + 4954950049509.

It is an arithmetic number, because the mean of its divisors is an integer number (4954950049509).

Almost surely, 2^{9909900099017} is an apocalyptic number.

It is an amenable number.

9909900099017 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909900099017 is an equidigital number, since it uses as much as digits as its factorization.

9909900099017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3720087, while the sum is 62.

The spelling of 9909900099017 in words is "nine trillion, nine hundred nine billion, nine hundred million, ninety-nine thousand, seventeen".