13531040012 has 12 divisors (see below), whose sum is σ = 27062080080. Its totient is φ = 5799017136.

The previous prime is 13531040011. The next prime is 13531040051. The reversal of 13531040012 is 21004013531.

13531040012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (13531040011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241625687 + ... + 241625742.

It is an arithmetic number, because the mean of its divisors is an integer number (2255173340).

Almost surely, 2^13531040012 is an apocalyptic number.

It is an amenable number.

13531040012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13531040012 is a wasteful number, since it uses less digits than its factorization.

13531040012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483251440 (or 483251438 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 13531040012 its reverse (21004013531), we get a palindrome (34535053543).

The spelling of 13531040012 in words is "thirteen billion, five hundred thirty-one million, forty thousand, twelve".