11517438361 has 24 divisors (see below), whose sum is σ = 13806208640. Its totient is φ = 9542538720.

The previous prime is 11517438323. The next prime is 11517438379. The reversal of 11517438361 is 16383471511.

It is not a de Polignac number, because 11517438361 - 2¹¹ = 11517436313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11517430361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77926 + ... + 170608.

Almost surely, 2^11517438361 is an apocalyptic number.

11517438361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11517438361 is a deficient number, since it is larger than the sum of its proper divisors (2288770279).

11517438361 is a wasteful number, since it uses less digits than its factorization.

11517438361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92797 (or 92786 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The spelling of 11517438361 in words is "eleven billion, five hundred seventeen million, four hundred thirty-eight thousand, three hundred sixty-one".