11975835218 has 8 divisors (see below), whose sum is σ = 17967107340. Its totient is φ = 5986799440.

The previous prime is 11975835197. The next prime is 11975835227. The reversal of 11975835218 is 81253857911.

11975835218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11320321609 + 655513609 = 106397^2 + 25603^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545633 + ... + 567156.

Almost surely, 2^11975835218 is an apocalyptic number.

11975835218 is a deficient number, since it is larger than the sum of its proper divisors (5991272122).

11975835218 is a wasteful number, since it uses less digits than its factorization.

11975835218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118172.

The product of its digits is 604800, while the sum is 50.

The spelling of 11975835218 in words is "eleven billion, nine hundred seventy-five million, eight hundred thirty-five thousand, two hundred eighteen".