550210111818 has 24 divisors (see below), whose sum is σ = 1111881830112. Its totient is φ = 181512595584.

The previous prime is 550210111813. The next prime is 550210111861. The reversal of 550210111818 is 818111012055.

It is not an unprimeable number, because it can be changed into a prime (550210111813) 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, 4816630 + ... + 4929537.

It is an arithmetic number, because the mean of its divisors is an integer number (46328409588).

Almost surely, 2^550210111818 is an apocalyptic number.

550210111818 is an abundant number, since it is smaller than the sum of its proper divisors (561671718294).

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

550210111818 is an equidigital number, since it uses as much as digits as its factorization.

550210111818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746366 (or 9746269 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 33.

The spelling of 550210111818 in words is "five hundred fifty billion, two hundred ten million, one hundred eleven thousand, eight hundred eighteen".