13534044040 has 64 divisors (see below), whose sum is σ = 33272285760. Its totient is φ = 4913713920.

The previous prime is 13534044037. The next prime is 13534044047. The reversal of 13534044040 is 4044043531.

It is not an unprimeable number, because it can be changed into a prime (13534044047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259002 + ... + 306838.

It is an arithmetic number, because the mean of its divisors is an integer number (519879465).

Almost surely, 2^13534044040 is an apocalyptic number.

13534044040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13534044040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16636142880).

13534044040 is an abundant number, since it is smaller than the sum of its proper divisors (19738241720).

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

13534044040 is a wasteful number, since it uses less digits than its factorization.

13534044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48502 (or 48498 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 13534044040 its reverse (4044043531), we get a palindrome (17578087571).

The spelling of 13534044040 in words is "thirteen billion, five hundred thirty-four million, forty-four thousand, forty".