Contact a lawyer immediately and hire someone to screen phone calls. Also a Financial Planner and advisor.
Place half of it in a trust fund for one year.
Donate to my church for the Food Bank.
Donate to St. Jude's Hospital for Children's Cancer Research
Donate to The Salvation Army
Donate to charities that serve children
Pay off my daughter's mortgage
Buy the three remaining children homes. Mortgage free.
Play hidden Santa each Christmas to total strangers
What I wouldn't do.
Give large sums of money to my kids. They would get a monthly stipend for the rest of their lives from a trust fund.