13533443808 has 24 divisors (see below), whose sum is σ = 35525290248. Its totient is φ = 4511147904.

The previous prime is 13533443789. The next prime is 13533443809. The reversal of 13533443808 is 80834433531.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13533443808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13533443809) 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 3 ways as a sum of consecutive naturals, for example, 70486591 + ... + 70486782.

It is an arithmetic number, because the mean of its divisors is an integer number (1480220427).

Almost surely, 2^13533443808 is an apocalyptic number.

It is an amenable number.

13533443808 is an abundant number, since it is smaller than the sum of its proper divisors (21991846440).

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

13533443808 is a wasteful number, since it uses less digits than its factorization.

13533443808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140973386 (or 140973378 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 13533443808 in words is "thirteen billion, five hundred thirty-three million, four hundred forty-three thousand, eight hundred eight".