13205853563 has 4 divisors (see below), whose sum is σ = 15092404080. Its totient is φ = 11319303048.

The previous prime is 13205853559. The next prime is 13205853571. The reversal of 13205853563 is 36535850231.

13205853563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36535850231 = 433 ⋅84378407.

It is a cyclic number.

It is not a de Polignac number, because 13205853563 - 2² = 13205853559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13205853563.

It is not an unprimeable number, because it can be changed into a prime (13205853523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943275248 + ... + 943275261.

It is an arithmetic number, because the mean of its divisors is an integer number (3773101020).

Almost surely, 2^13205853563 is an apocalyptic number.

13205853563 is a deficient number, since it is larger than the sum of its proper divisors (1886550517).

13205853563 is an equidigital number, since it uses as much as digits as its factorization.

13205853563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886550516.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 13205853563 in words is "thirteen billion, two hundred five million, eight hundred fifty-three thousand, five hundred sixty-three".