11541213004243 has 4 divisors (see below), whose sum is σ = 12428998619968. Its totient is φ = 10653427388520.

The previous prime is 11541213004213. The next prime is 11541213004249. The reversal of 11541213004243 is 34240031214511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11541213004243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11541213004249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443892807843 + ... + 443892807868.

It is an arithmetic number, because the mean of its divisors is an integer number (3107249654992).

Almost surely, 2^{11541213004243} is an apocalyptic number.

11541213004243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11541213004243 is a deficient number, since it is larger than the sum of its proper divisors (887785615725).

11541213004243 is an equidigital number, since it uses as much as digits as its factorization.

11541213004243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887785615724.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 11541213004243 its reverse (34240031214511), we get a palindrome (45781244218754).

The spelling of 11541213004243 in words is "eleven trillion, five hundred forty-one billion, two hundred thirteen million, four thousand, two hundred forty-three".