9853505149809 has 16 divisors (see below), whose sum is σ = 13768062452352. Its totient is φ = 6256427219328.

The previous prime is 9853505149687. The next prime is 9853505149843. The reversal of 9853505149809 is 9089415053589.

It is not a de Polignac number, because 9853505149809 - 2¹³ = 9853505141617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9853505149809.

It is not an unprimeable number, because it can be changed into a prime (9853505149309) 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 in 15 ways as a sum of consecutive naturals, for example, 306431182 + ... + 306463335.

It is an arithmetic number, because the mean of its divisors is an integer number (860503903272).

Almost surely, 2^{9853505149809} is an apocalyptic number.

It is an amenable number.

9853505149809 is a deficient number, since it is larger than the sum of its proper divisors (3914557302543).

9853505149809 is a wasteful number, since it uses less digits than its factorization.

9853505149809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612894776.

The product of its (nonzero) digits is 69984000, while the sum is 66.

The spelling of 9853505149809 in words is "nine trillion, eight hundred fifty-three billion, five hundred five million, one hundred forty-nine thousand, eight hundred nine".