13440043053 has 24 divisors (see below), whose sum is σ = 20626164000. Its totient is φ = 8409105504.

The previous prime is 13440043049. The next prime is 13440043079. The reversal of 13440043053 is 35034004431.

It is not a de Polignac number, because 13440043053 - 2² = 13440043049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440043013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348978 + ... + 385571.

It is an arithmetic number, because the mean of its divisors is an integer number (859423500).

Almost surely, 2^13440043053 is an apocalyptic number.

It is an amenable number.

13440043053 is a deficient number, since it is larger than the sum of its proper divisors (7186120947).

13440043053 is a wasteful number, since it uses less digits than its factorization.

13440043053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734681 (or 734678 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 13440043053 its reverse (35034004431), we get a palindrome (48474047484).

The spelling of 13440043053 in words is "thirteen billion, four hundred forty million, forty-three thousand, fifty-three".