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=10000a+10000b+1000c+100d+10e+f+10000a+1000b+100c+10d+e+1000a+100b+10c+d+100a+10b+c+10a+b+a,
=111111a+11111b+1111c+111d+11e+f,
=123456,
又因为111111+11111+1111+111+11+1=123456.符合题意,所以这个数是111111.
答:这个数
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