13540043532 has 48 divisors (see below), whose sum is σ = 31985795072. Its totient is φ = 4457617920.

The previous prime is 13540043509. The next prime is 13540043623. The reversal of 13540043532 is 23534004531.

It is a self number, because there is not a number n which added to its sum of digits gives 13540043532.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319932 + ... + 359772.

Almost surely, 2^13540043532 is an apocalyptic number.

13540043532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13540043532 is an abundant number, since it is smaller than the sum of its proper divisors (18445751540).

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

13540043532 is a wasteful number, since it uses less digits than its factorization.

13540043532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40198 (or 40196 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 13540043532 in words is "thirteen billion, five hundred forty million, forty-three thousand, five hundred thirty-two".