81165677916672

Names of 81165677916672

• Cardinal: 81165677916672 can be written as Eighty-one trillion, one hundred sixty-five billion, six hundred seventy-seven million, nine hundred sixteen thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 8.1165677916672 × 10¹³

Factors of 81165677916672

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 18071

Divisors of 81165677916672

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 32 36 38 47 48 54 57 64 72 76 94 96 108 114 128 141 144 152 171 188 192 216 228 256 282 288 304 342 373 376 384 423 432 456 512 513 564 576 608 684 746 752 768 846 864 893 912 1026 1119 1128 1152 1216 1269 1368 1492 1504 1536 1692 1728 1786 1824 2052 2238 2256 2304 2432 2538 2679 2736 2984 3008 3357 3384 3456 3572 3648 4104 4476 4512 4608 4864 5076 5358 5472 5968 6016 6714 6768 6912 7087 7144 7296 8037 8208 8952 9024 9728 10071 10152 10716 10944 11936 12032 13428 13536 13824 14174 14288 14592 16074 16416 17531 17627 17904 18048 20142 20304 21261 21432 21888 23872 24064 24111 26856 27072 28348 28576 29184 32148 32832 35062 35254 35808 36096 40284 40608 42522 42864 43776 47744 48222 52593 52881 53712 54144 56696 57152 63783 64296 65664 70124 70508 71616 72192 80568 81216 85044 85728 87552 95488 96444 105186 105762 107424 108288 113392 114304 127566 128592 131328 140248 141016 143232 157779 158643 161136 162432 170088 171456 190976 191349 192888 210372 211524 214848 216576 226784 228608 255132 257184 262656 280496 282032 286464 315558 317286 322272 324864 333089 334913 340176 342912 382698 385776 420744 423048 429696 453568 457216 473337 475929 510264 514368 560992 564064 572928 631116 634572 644544 649728 666178 669826 680352 685824 765396 771552 828469 841488 846096 859392 907136 946674 951858 999267 1004739 1020528 1028736 1121984 1128128 1262232 1269144 1289088 1332356 1339652 1360704 1371648 1530792 1543104 1656938 1682976 1692192 1718784 1814272 1893348 1903716 1998534 2009478 2041056 2057472 2243968 2256256 2485407 2524464 2538288 2578176 2664712 2679304 2721408 2997801 3014217 3061584 3086208 3313876 3365952 3384384 3628544 3786696 3807432 3997068 4018956 4082112 4114944 4487936 4512512 4970814 5048928 5076576 5156352 5329424 5358608 5442816 5995602 6028434 6123168 6172416 6574871 6627752 6731904 6768768 7456221 7573392 7614864 7994136 8037912 8164224 8975872 8993403 9025024 9042651 9941628 10097856 10153152 10658848 10717216 10885632 11991204 12056868 12246336 12344832 13149742 13255504 13463808 13537536 14912442 15146784 15229728 15740911 15988272 16075824 16328448 17986806 18085302 19724613 19883256 20195712 20306304 21317696 21434432 22368663 23982408 24113736 24492672 26299484 26511008 26927616 27075072 29824884 30293568 30459456 31481822 31976544 32151648 32656896 35973612 36170604 39449226 39766512 40391424 40612608 42635392 42868864 44737326 47222733 47964816 48227472 48985344 52598968 53022016 59173839 59649768 60587136 60918912 62963644 63953088 64303296 71947224 72341208 78898452 79533024 80782848 81225216 85270784 85737728 89474652 94445466 95929632 96454944 97970688 105197936 106044032 118347678 119299536 121174272 121837824 124922549 125927288 127906176 128606592 141668199 143894448 144682416 157796904 159066048 170541568 171475456 177521517 178949304 188890932 191859264 192909888 210395872 212088064 236695356 238599072 242348544 243675648 249845098 251854576 255812352 257213184 283336398 287788896 289364832 309018937 315593808 318132096 355043034 357898608 374767647 377781864 383718528 385819776 420791744 424176128 425004597 473390712 477198144 499690196 503709152 511624704 514426368 566672796 575577792 578729664 618037874 631187616 636264192 710086068 715797216 749535294 755563728 767437056 771639552 841583488 850009194 927056811 946781424 954396288 999380392 1007418304 1124302941 1133345592 1151155584 1157459328 1236075748 1262375232 1272528384 1420172136 1431594432 1499070588 1511127456 1534874112 1543279104 1683166976 1700018388 1854113622 1893562848 1908792576 1998760784 2014836608 2248605882 2266691184 2302311168 2314918656 2472151496 2524750464 2781170433 2840344272 2863188864 2998141176 3022254912 3366333952 3372908823 3400036776 3708227244 3787125696 3817585152 3997521568 4029673216 4497211764 4533382368 4604622336 4629837312 4944302992 5049500928 5562340866 5680688544 5726377728 5871359803 5996282352 6044509824 6745817646 6800073552 7416454488 7574251392 7995043136 8059346432 8343511299 8994423528 9066764736 9888605984 10099001856 11124681732 11361377088 11452755456 11742719606 11992564704 12089019648 13491635292 13600147104 14832908976 15148502784 15990086272 16687022598 17614079409 17988847056 18133529472 19777211968 22249363464 22722754176 23485439212 23985129408 24178039296 26983270584 27200294208 29665817952 30297005568 31980172544 33374045196 35228158818 35977694112 36267058944 39554423936 44498726928 45445508352 46970878424 47970258816 52842238227 53966541168 54400588416 59331635904 63960345088 66748090392 70456317636 71955388224 72534117888 79108847872 88997453856 90891016704 93941756848 95940517632 105684476454 107933082336 108801176832 118663271808 133496180784 140912635272 143910776448 158217695744 158526714681 177994907712 187883513696 191881035264 211368952908 215866164672 217602353664 237326543616 266992361568 281825270544 287821552896 317053429362 355989815424 375767027392 422737905816 431732329344 474653087232 533984723136 563650541088 575643105792 634106858724 711979630848 751534054784 845475811632 863464658688 1067969446272 1127301082176 1268213717448 1423959261696 1503068109568 1690951623264 1726929317376 2135938892544 2254602164352 2536427434896 3006136219136 3381903246528 4271877785088 4509204328704 5072854869792 6763806493056 9018408657408 10145709739584 13527612986112 20291419479168 27055225972224 40582838958336 81165677916672
• Sum of all divisors σ(n): 258989109350400
• Sum of proper divisors (its aliquot sum) s(n): 177823431433728
• 81165677916672 is an abundant number, because the sum of its proper divisors (177823431433728) is greater than itself. Its abundance is 96657753517056

Bases of 81165677916672

• Binary: 10010011101000111011011011001100111001000000000₂
• Hexadecimal: 0x49D1DB667200
• Base-36: SRQZWZUO0

Squares and roots of 81165677916672

• 81165677916672 squared (81165677916672²) is 6587867271672936774175555584
• 81165677916672 cubed (81165677916672³) is 534708713130390303513129384483545256296448
• The square root of 81165677916672 is 9009199.6268631987
• The cube root of 81165677916672 is 43296.9668836833

Scales and comparisons

• 81,165,677,916,672 seconds is equal to 2,580,817 years, 25 weeks, 5 days, 11 hours, 31 minutes, 12 seconds.
• To count from 1 to 81,165,677,916,672 would take you about six million, four hundred fifty-two thousand and forty-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81165677916672 cubic inches would be around 3608.1 feet tall.

Recreational maths with 81165677916672

• 81165677916672 backwards is 27661977656118
• 81165677916672 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81165677916672's digits is 72
• More coming soon!