11800546218 has 24 divisors (see below), whose sum is σ = 25570369188. Its totient is φ = 3933127872.

The previous prime is 11800546217. The next prime is 11800546231. The reversal of 11800546218 is 81264500811.

11800546218 is a `hidden beast` number, since 1 + 180 + 0 + 5 + 462 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11669832729 + 130713489 = 108027^2 + 11433^2 .

It is not an unprimeable number, because it can be changed into a prime (11800546213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201046 + ... + 253022.

Almost surely, 2^11800546218 is an apocalyptic number.

11800546218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11800546218 is an abundant number, since it is smaller than the sum of its proper divisors (13769822970).

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

11800546218 is a wasteful number, since it uses less digits than its factorization.

11800546218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64598 (or 64595 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 11800546218 in words is "eleven billion, eight hundred million, five hundred forty-six thousand, two hundred eighteen".