13040040012 has 48 divisors (see below), whose sum is σ = 31445686272. Its totient is φ = 4201453440.

The previous prime is 13040040011. The next prime is 13040040017. The reversal of 13040040012 is 21004004031.

It is a junction number, because it is equal to n+sod(n) for n = 13040039973 and 13040040000.

It is not an unprimeable number, because it can be changed into a prime (13040040011) 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, 298353 + ... + 339255.

It is an arithmetic number, because the mean of its divisors is an integer number (655118464).

Almost surely, 2^13040040012 is an apocalyptic number.

13040040012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13040040012 is an abundant number, since it is smaller than the sum of its proper divisors (18405646260).

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

13040040012 is a wasteful number, since it uses less digits than its factorization.

13040040012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41798 (or 41796 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 13040040012 its reverse (21004004031), we get a palindrome (34044044043).

The spelling of 13040040012 in words is "thirteen billion, forty million, forty thousand, twelve".