11713043538 has 24 divisors (see below), whose sum is σ = 29003727168. Its totient is φ = 3346583832.

The previous prime is 11713043533. The next prime is 11713043539. The reversal of 11713043538 is 83534031711.

11713043538 is a `hidden beast` number, since 11 + 71 + 3 + 0 + 43 + 538 = 666.

11713043538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11713043533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46480206 + ... + 46480457.

It is an arithmetic number, because the mean of its divisors is an integer number (1208488632).

Almost surely, 2^11713043538 is an apocalyptic number.

11713043538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11713043538 is an abundant number, since it is smaller than the sum of its proper divisors (17290683630).

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

11713043538 is a wasteful number, since it uses less digits than its factorization.

11713043538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92960678 (or 92960675 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 11713043538 in words is "eleven billion, seven hundred thirteen million, forty-three thousand, five hundred thirty-eight".