13553559808 has 36 divisors (see below), whose sum is σ = 28645607340. Its totient is φ = 6378143744.

The previous prime is 13553559793. The next prime is 13553559809. The reversal of 13553559808 is 80895535531.

It can be written as a sum of positive squares in 2 ways, for example, as 7721488384 + 5832071424 = 87872^2 + 76368^2 .

It is not an unprimeable number, because it can be changed into a prime (13553559809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552813 + ... + 1561516.

It is an arithmetic number, because the mean of its divisors is an integer number (795711315).

Almost surely, 2^13553559808 is an apocalyptic number.

It is an amenable number.

13553559808 is an abundant number, since it is smaller than the sum of its proper divisors (15092047532).

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

13553559808 is an equidigital number, since it uses as much as digits as its factorization.

13553559808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114362 (or 3114348 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 52.

The spelling of 13553559808 in words is "thirteen billion, five hundred fifty-three million, five hundred fifty-nine thousand, eight hundred eight".