11518990559 has 8 divisors (see below), whose sum is σ = 12543366000. Its totient is φ = 10536426432.

The previous prime is 11518990531. The next prime is 11518990583. The reversal of 11518990559 is 95509981511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11518990559 is a prime.

It is a super-2 number, since 2×11518990559² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11518990559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518990529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10452254 + ... + 10453355.

It is an arithmetic number, because the mean of its divisors is an integer number (1567920750).

Almost surely, 2^11518990559 is an apocalyptic number.

11518990559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11518990559 is a deficient number, since it is larger than the sum of its proper divisors (1024375441).

11518990559 is a wasteful number, since it uses less digits than its factorization.

11518990559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20905657.

The product of its (nonzero) digits is 729000, while the sum is 53.

The spelling of 11518990559 in words is "eleven billion, five hundred eighteen million, nine hundred ninety thousand, five hundred fifty-nine".