13000040243 has 16 divisors (see below), whose sum is σ = 13939464000. Its totient is φ = 12092167296.

The previous prime is 13000040237. The next prime is 13000040257. The reversal of 13000040243 is 34204000031.

It is a cyclic number.

It is not a de Polignac number, because 13000040243 - 2⁴ = 13000040227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13000040213) 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, 2336621 + ... + 2342177.

It is an arithmetic number, because the mean of its divisors is an integer number (871216500).

Almost surely, 2^13000040243 is an apocalyptic number.

13000040243 is a deficient number, since it is larger than the sum of its proper divisors (939423757).

13000040243 is a wasteful number, since it uses less digits than its factorization.

13000040243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8366.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 13000040243 its reverse (34204000031), we get a palindrome (47204040274).

The spelling of 13000040243 in words is "thirteen billion, forty thousand, two hundred forty-three".