10985530968509 has 2 divisors, whose sum is σ = 10985530968510. Its totient is φ = 10985530968508.

The previous prime is 10985530968491. The next prime is 10985530968679. The reversal of 10985530968509 is 90586903558901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10007415902500 + 978115066009 = 3163450^2 + 988997^2 .

It is a cyclic number.

It is not a de Polignac number, because 10985530968509 - 2²⁴ = 10985514191293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10985530968109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5492765484254 + 5492765484255.

It is an arithmetic number, because the mean of its divisors is an integer number (5492765484255).

Almost surely, 2^{10985530968509} is an apocalyptic number.

It is an amenable number.

10985530968509 is a deficient number, since it is larger than the sum of its proper divisors (1).

10985530968509 is an equidigital number, since it uses as much as digits as its factorization.

10985530968509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976000, while the sum is 68.

The spelling of 10985530968509 in words is "ten trillion, nine hundred eighty-five billion, five hundred thirty million, nine hundred sixty-eight thousand, five hundred nine".