11471368218 has 64 divisors (see below), whose sum is σ = 24443043840. Its totient is φ = 3578867712.

The previous prime is 11471368211. The next prime is 11471368241. The reversal of 11471368218 is 81286317411.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11471368218.

It is not an unprimeable number, because it can be changed into a prime (11471368211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3719305 + ... + 3722387.

It is an arithmetic number, because the mean of its divisors is an integer number (381922560).

Almost surely, 2^11471368218 is an apocalyptic number.

11471368218 is an abundant number, since it is smaller than the sum of its proper divisors (12971675622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11471368218 is a wasteful number, since it uses less digits than its factorization.

11471368218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491.

The product of its digits is 64512, while the sum is 42.

The spelling of 11471368218 in words is "eleven billion, four hundred seventy-one million, three hundred sixty-eight thousand, two hundred eighteen".