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68061334560 = 2535141794447
BaseRepresentation
bin111111011000110001…
…011000110000100000
320111200022102000211220
4333120301120300200
52103342200201220
651133354335040
74626423540552
oct773061306040
9214608360756
1068061334560
112695693802a
121123572a480
1365588c683b
1434193654d2
151b85316540
hexfd8c58c20

68061334560 has 48 divisors (see below), whose sum is σ = 214393205376. Its totient is φ = 18149689088.

The previous prime is 68061334541. The next prime is 68061334619. The reversal of 68061334560 is 6543316086.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70896744 + ... + 70897703.

It is an arithmetic number, because the mean of its divisors is an integer number (4466525112).

Almost surely, 268061334560 is an apocalyptic number.

68061334560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68061334560 is an abundant number, since it is smaller than the sum of its proper divisors (146331870816).

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

68061334560 is a wasteful number, since it uses less digits than its factorization.

68061334560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141794465 (or 141794457 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 68061334560 in words is "sixty-eight billion, sixty-one million, three hundred thirty-four thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 141794447 283588894 425383341 567177788 708972235 850766682 1134355576 1417944470 1701533364 2126916705 2268711152 2835888940 3403066728 4253833410 4537422304 5671777880 6806133456 8507666820 11343555760 13612266912 17015333640 22687111520 34030667280 68061334560