That is the estimated global cost of Alzheimer's disease and related dementias.
Experts say if dementia care were a country, it would be the world's 18th largest economy.
The information comes from a report released today by Alzheimer's Disease International.
The estimates include direct costs of medical and social care and unpaid care offered by caregivers and others.
The World Alzheimer Report 2010 urges all countries to develop national plans to deal with this growing disease.
The group plans on approaching congress next week to make Alzheimer's a national priority.