11218969850 has 24 divisors (see below), whose sum is σ = 22764310848. Its totient is φ = 4079625200.

The previous prime is 11218969819. The next prime is 11218969873. The reversal of 11218969850 is 5896981211.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10198514 + ... + 10199613.

It is an arithmetic number, because the mean of its divisors is an integer number (948512952).

Almost surely, 2^11218969850 is an apocalyptic number.

11218969850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11218969850 is an abundant number, since it is smaller than the sum of its proper divisors (11545340998).

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

11218969850 is a wasteful number, since it uses less digits than its factorization.

11218969850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398150 (or 20398145 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 50.

The spelling of 11218969850 in words is "eleven billion, two hundred eighteen million, nine hundred sixty-nine thousand, eight hundred fifty".