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12907741867580 = 2257241833870457
BaseRepresentation
bin1011101111010101000101…
…0111100110111000111100
31200200222010201112210211002
42323311101113212320330
53142440023404230310
643241422412345432
72501360606410400
oct273652127467074
950628121483732
1012907741867580
11412716286436a
121545734775278
1372826c08c911
14328a49277100
15175b5ee58da5
hexbbd515e6e3c

12907741867580 has 144 divisors (see below), whose sum is σ = 32690012122656. Its totient is φ = 4265552148480.

The previous prime is 12907741867567. The next prime is 12907741867583. The reversal of 12907741867580 is 8576814770921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907741867583) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1399712 + ... + 5270168.

It is an arithmetic number, because the mean of its divisors is an integer number (227013973074).

Almost surely, 212907741867580 is an apocalyptic number.

12907741867580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12907741867580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16345006061328).

12907741867580 is an abundant number, since it is smaller than the sum of its proper divisors (19782270255076).

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

12907741867580 is a wasteful number, since it uses less digits than its factorization.

12907741867580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870604 (or 3870595 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 65.

The spelling of 12907741867580 in words is "twelve trillion, nine hundred seven billion, seven hundred forty-one million, eight hundred sixty-seven thousand, five hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 41 49 70 82 83 98 140 164 166 196 205 245 287 332 410 415 490 574 581 820 830 980 1148 1162 1435 1660 2009 2324 2870 2905 3403 4018 4067 5740 5810 6806 8036 8134 10045 11620 13612 16268 17015 20090 20335 23821 34030 40180 40670 47642 68060 81340 95284 119105 166747 238210 333494 476420 666988 833735 1667470 3334940 3870457 7740914 15481828 19352285 27093199 38704570 54186398 77409140 108372796 135465995 158688737 189652393 270931990 317377474 321247931 379304786 541863980 634754948 642495862 758609572 793443685 948261965 1110821159 1284991724 1586887370 1606239655 1896523930 2221642318 2248735517 3173774740 3212479310 3793047860 4443284636 4497471034 5554105795 6424958620 7775748113 8994942068 11108211590 11243677585 13171165171 15551496226 15741148619 22216423180 22487355170 26342330342 31102992452 31482297238 38878740565 44974710340 52684660684 62964594476 65855825855 77757481130 78705743095 92198156197 131711651710 155514962260 157411486190 184396312394 263423303420 314822972380 368792624788 460990780985 645387093379 921981561970 1290774186758 1843963123940 2581548373516 3226935466895 6453870933790 12907741867580