13205332553 has 16 divisors (see below), whose sum is σ = 15280831104. Its totient is φ = 11177602560.

The previous prime is 13205332549. The next prime is 13205332559. The reversal of 13205332553 is 35523350231.

It is a cyclic number.

It is not a de Polignac number, because 13205332553 - 2² = 13205332549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13205332559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291926 + ... + 334112.

It is an arithmetic number, because the mean of its divisors is an integer number (955051944).

Almost surely, 2^13205332553 is an apocalyptic number.

It is an amenable number.

13205332553 is a deficient number, since it is larger than the sum of its proper divisors (2075498551).

13205332553 is an equidigital number, since it uses as much as digits as its factorization.

13205332553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42752.

The product of its (nonzero) digits is 40500, while the sum is 32.

Adding to 13205332553 its reverse (35523350231), we get a palindrome (48728682784).

The spelling of 13205332553 in words is "thirteen billion, two hundred five million, three hundred thirty-two thousand, five hundred fifty-three".