1115543243515 has 8 divisors (see below), whose sum is σ = 1417396121280. Its totient is φ = 839938442112.

The previous prime is 1115543243471. The next prime is 1115543243543. The reversal of 1115543243515 is 5153423455111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115543243515 - 2¹⁷ = 1115543112443 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6562018995 + ... + 6562019164.

It is an arithmetic number, because the mean of its divisors is an integer number (177174515160).

Almost surely, 2^{1115543243515} is an apocalyptic number.

1115543243515 is a deficient number, since it is larger than the sum of its proper divisors (301852877765).

1115543243515 is a wasteful number, since it uses less digits than its factorization.

1115543243515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13124038181.

The product of its digits is 180000, while the sum is 40.

Adding to 1115543243515 its reverse (5153423455111), we get a palindrome (6268966698626).

The spelling of 1115543243515 in words is "one trillion, one hundred fifteen billion, five hundred forty-three million, two hundred forty-three thousand, five hundred fifteen".