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68343264659680 = 25511232207172343
BaseRepresentation
bin11111000101000011010000…
…00000110100100011100000
322221222112220121210101020121
433202201220000310203200
532424214001223102210
6401204243511250024
720252431544423353
oct1742415000644340
9287875817711217
1068343264659680
111a85a24121682a
1277b9471079914
132c1998581119a
1412c3b9010229a
157d7b725d06da
hex3e28680348e0

68343264659680 has 96 divisors (see below), whose sum is σ = 161678901049344. Its totient is φ = 27300428745216.

The previous prime is 68343264659639. The next prime is 68343264659693. The reversal of 68343264659680 is 8695646234386.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396467589 + ... + 396639931.

It is an arithmetic number, because the mean of its divisors is an integer number (1684155219264).

Almost surely, 268343264659680 is an apocalyptic number.

It is an amenable number.

68343264659680 is an abundant number, since it is smaller than the sum of its proper divisors (93335636389664).

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

68343264659680 is a wasteful number, since it uses less digits than its factorization.

68343264659680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175688 (or 175680 counting only the distinct ones).

The product of its (nonzero) digits is 1074954240, while the sum is 70.

The spelling of 68343264659680 in words is "sixty-eight trillion, three hundred forty-three billion, two hundred sixty-four million, six hundred fifty-nine thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1123 2207 2246 4414 4492 5615 8828 8984 11035 11230 17656 17968 22070 22460 35312 35936 44140 44920 70624 88280 89840 172343 176560 179680 344686 353120 689372 861715 1378744 1723430 2478461 2757488 3446860 4956922 5514976 6893720 9913844 12392305 13787440 19827688 24784610 27574880 39655376 49569220 79310752 99138440 193541189 198276880 380361001 387082378 396553760 760722002 774164756 967705945 1521444004 1548329512 1901805005 1935411890 3042888008 3096659024 3803610010 3870823780 6085776016 6193318048 7607220020 7741647560 12171552032 15214440040 15483295120 30428880080 30966590240 60857760160 427145404123 854290808246 1708581616492 2135727020615 3417163232984 4271454041230 6834326465968 8542908082460 13668652931936 17085816164920 34171632329840 68343264659680