13040543135320 has 32 divisors (see below), whose sum is σ = 29348577946800. Its totient is φ = 5214909539968.

The previous prime is 13040543135297. The next prime is 13040543135327. The reversal of 13040543135320 is 2353134504031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040543135327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40704514 + ... + 41023633.

Almost surely, 2^{13040543135320} is an apocalyptic number.

13040543135320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13040543135320 is an abundant number, since it is smaller than the sum of its proper divisors (16308034811480).

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

13040543135320 is a wasteful number, since it uses less digits than its factorization.

13040543135320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81732147 (or 81732143 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 13040543135320 its reverse (2353134504031), we get a palindrome (15393677639351).

The spelling of 13040543135320 in words is "thirteen trillion, forty billion, five hundred forty-three million, one hundred thirty-five thousand, three hundred twenty".