11509982549999 has 8 divisors (see below), whose sum is σ = 12010731187200. Its totient is φ = 11009260130616.

The previous prime is 11509982549963. The next prime is 11509982550007. The reversal of 11509982549999 is 99994528990511.

It is a happy number.

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 11509982549999 - 2¹² = 11509982545903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11509982549929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5654699 + ... + 7415900.

It is an arithmetic number, because the mean of its divisors is an integer number (1501341398400).

Almost surely, 2^{11509982549999} is an apocalyptic number.

11509982549999 is a deficient number, since it is larger than the sum of its proper divisors (500748637201).

11509982549999 is a wasteful number, since it uses less digits than its factorization.

11509982549999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108909.

The product of its (nonzero) digits is 850305600, while the sum is 80.

The spelling of 11509982549999 in words is "eleven trillion, five hundred nine billion, nine hundred eighty-two million, five hundred forty-nine thousand, nine hundred ninety-nine".