13550809468 has 72 divisors (see below), whose sum is σ = 29233325520. Its totient is φ = 5470375680.

The previous prime is 13550809457. The next prime is 13550809469. The reversal of 13550809468 is 86490805531.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550809469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203971 + ... + 262117.

It is an arithmetic number, because the mean of its divisors is an integer number (406018410).

Almost surely, 2^13550809468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13550809468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14616662760).

13550809468 is an abundant number, since it is smaller than the sum of its proper divisors (15682516052).

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

13550809468 is a wasteful number, since it uses less digits than its factorization.

13550809468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58235 (or 58226 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 13550809468 in words is "thirteen billion, five hundred fifty million, eight hundred nine thousand, four hundred sixty-eight".