13440220203243 has 32 divisors (see below), whose sum is σ = 19687564800000. Its totient is φ = 8117864114976.

The previous prime is 13440220203227. The next prime is 13440220203353. The reversal of 13440220203243 is 34230202204431.

It is not a de Polignac number, because 13440220203243 - 2⁴ = 13440220203227 is a prime.

It is a super-2 number, since 2×13440220203243² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13440220203243.

It is not an unprimeable number, because it can be changed into a prime (13440220103243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5528296 + ... + 7579082.

It is an arithmetic number, because the mean of its divisors is an integer number (615236400000).

Almost surely, 2^{13440220203243} is an apocalyptic number.

13440220203243 is a deficient number, since it is larger than the sum of its proper divisors (6247344596757).

13440220203243 is a wasteful number, since it uses less digits than its factorization.

13440220203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055831.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 13440220203243 its reverse (34230202204431), we get a palindrome (47670422407674).

The spelling of 13440220203243 in words is "thirteen trillion, four hundred forty billion, two hundred twenty million, two hundred three thousand, two hundred forty-three".