13563450550 has 24 divisors (see below), whose sum is σ = 27168636096. Its totient is φ = 5008043040.

The previous prime is 13563450529. The next prime is 13563450583. The reversal of 13563450550 is 5505436531.

13563450550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10432774 + ... + 10434073.

It is an arithmetic number, because the mean of its divisors is an integer number (1132026504).

Almost surely, 2^13563450550 is an apocalyptic number.

13563450550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13563450550 is an abundant number, since it is smaller than the sum of its proper divisors (13605185546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13563450550 is a wasteful number, since it uses less digits than its factorization.

13563450550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20866872 (or 20866867 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 13563450550 in words is "thirteen billion, five hundred sixty-three million, four hundred fifty thousand, five hundred fifty".