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87707531413680 = 2435679375821183
BaseRepresentation
bin10011111100010100000000…
…010000010000100010110000
3102111112202110122222212001120
4103330110000100100202300
542444000011020214210
6510312141135502240
724321442251144423
oct2374240020204260
9374482418885046
1087707531413680
1125a45611a52702
129a06382987980
1339c2a28064079
1417930d245d9ba
15a2171a4ca270
hex4fc5004108b0

87707531413680 has 160 divisors (see below), whose sum is σ = 276246009790464. Its totient is φ = 23014997710848.

The previous prime is 87707531413679. The next prime is 87707531413727. The reversal of 87707531413680 is 8631413570778.

It is a super-2 number, since 2×877075314136802 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12156369 + ... + 17977551.

Almost surely, 287707531413680 is an apocalyptic number.

87707531413680 is a gapful number since it is divisible by the number (80) 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 87707531413680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138123004895232).

87707531413680 is an abundant number, since it is smaller than the sum of its proper divisors (188538478376784).

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

87707531413680 is a wasteful number, since it uses less digits than its factorization.

87707531413680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822203 (or 5822197 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 87707531413680 in words is "eighty-seven trillion, seven hundred seven billion, five hundred thirty-one million, four hundred thirteen thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 67 80 120 134 201 240 268 335 402 536 670 804 937 1005 1072 1340 1608 1874 2010 2680 2811 3216 3748 4020 4685 5360 5622 7496 8040 9370 11244 14055 14992 16080 18740 22488 28110 37480 44976 56220 62779 74960 112440 125558 188337 224880 251116 313895 376674 502232 627790 753348 941685 1004464 1255580 1506696 1883370 2511160 3013392 3766740 5022320 5821183 7533480 11642366 15066960 17463549 23284732 29105915 34927098 46569464 58211830 69854196 87317745 93138928 116423660 139708392 174635490 232847320 279416784 349270980 390019261 465694640 698541960 780038522 1170057783 1397083920 1560077044 1950096305 2340115566 3120154088 3900192610 4680231132 5454448471 5850288915 6240308176 7800385220 9360462264 10908896942 11700577830 15600770440 16363345413 18720924528 21817793884 23401155660 27272242355 31201540880 32726690826 43635587768 46802311320 54544484710 65453381652 81816727065 87271175536 93604622640 109088969420 130906763304 163633454130 218177938840 261813526608 327266908260 365448047557 436355877680 654533816520 730896095114 1096344142671 1309067633040 1461792190228 1827240237785 2192688285342 2923584380456 3654480475570 4385376570684 5481720713355 5847168760912 7308960951140 8770753141368 10963441426710 14617921902280 17541506282736 21926882853420 29235843804560 43853765706840 87707531413680