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68130786468844 = 221153307661143971
BaseRepresentation
bin11110111110110111011110…
…10100110110001111101100
322221020020110122120220220001
433133123233110312033230
532412223322314000334
6400522503510234044
720231200254541261
oct1737335724661754
9287206418526801
1068130786468844
111a788116883120
127784252655924
132c02923270148
1412b7794ac7268
157d238892e714
hex3df6ef5363ec

68130786468844 has 96 divisors (see below), whose sum is σ = 133155708440832. Its totient is φ = 30239228448000.

The previous prime is 68130786468709. The next prime is 68130786468911. The reversal of 68130786468844 is 44886468703186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473153779 + ... + 473297749.

It is an arithmetic number, because the mean of its divisors is an integer number (1387038629592).

Almost surely, 268130786468844 is an apocalyptic number.

It is an amenable number.

68130786468844 is a deficient number, since it is larger than the sum of its proper divisors (65024921971988).

68130786468844 is a wasteful number, since it uses less digits than its factorization.

68130786468844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145007 (or 145005 counting only the distinct ones).

The product of its (nonzero) digits is 1189085184, while the sum is 73.

The spelling of 68130786468844 in words is "sixty-eight trillion, one hundred thirty billion, seven hundred eighty-six million, four hundred sixty-eight thousand, eight hundred forty-four".

Divisors: 1 2 4 11 22 44 53 106 212 307 583 614 661 1166 1228 1322 2332 2644 3377 6754 7271 13508 14542 16271 29084 32542 35033 65084 70066 140132 143971 178981 202927 287942 357962 385363 405854 575884 715924 770726 811708 1541452 1583681 2232197 3167362 4464394 6334724 7630463 8928788 10755131 15260926 21510262 30521852 43020524 44199097 83935093 88398194 95164831 118306441 167870186 176796388 190329662 236612882 335740372 380659324 473225764 486190067 972380134 1046813141 1944760268 2093626282 2342552141 4187252564 4685104282 5043736043 9370208564 10087472086 20174944172 25768073551 29215603117 51536147102 55481096473 58431206234 103072294204 110962192946 116862412468 221924385892 321371634287 642743268574 1285486537148 1548426965201 3096853930402 6193707860804 17032696617211 34065393234422 68130786468844