13530878288 has 40 divisors (see below), whose sum is σ = 27423096000. Its totient is φ = 6455395584.

The previous prime is 13530878279. The next prime is 13530878293. The reversal of 13530878288 is 88287803531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105563 + ... + 195461.

It is an arithmetic number, because the mean of its divisors is an integer number (685577400).

Almost surely, 2^13530878288 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 13530878288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13711548000).

13530878288 is an abundant number, since it is smaller than the sum of its proper divisors (13892217712).

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

13530878288 is a wasteful number, since it uses less digits than its factorization.

13530878288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90339 (or 90333 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 13530878288 in words is "thirteen billion, five hundred thirty million, eight hundred seventy-eight thousand, two hundred eighty-eight".