991989891072

Names of 991989891072

• Cardinal: 991989891072 can be written as Nine hundred ninety-one billion, nine hundred eighty-nine million, eight hundred ninety-one thousand and seventy-two.

Scientific notation

• Scientific notation: 9.91989891072 × 10¹¹

Factors of 991989891072

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 98

Divisors of 991989891072

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 27 29 32 36 41 46 48 54 58 64 69 72 82 87 92 96 108 116 123 128 138 144 164 174 184 192 207 216 232 246 256 261 276 288 328 348 368 369 384 414 432 464 492 512 522 552 576 621 656 667 696 736 738 768 783 828 864 928 943 984 1024 1044 1104 1107 1152 1189 1242 1312 1334 1392 1472 1476 1536 1566 1656 1681 1728 1856 1886 1968 2001 2048 2088 2208 2214 2304 2378 2484 2624 2668 2784 2829 2944 2952 3072 3132 3312 3362 3456 3567 3712 3772 3936 4002 4096 4176 4416 4428 4608 4756 4968 5043 5248 5336 5568 5658 5888 5904 6003 6144 6264 6624 6724 6912 7134 7424 7544 7872 8004 8192 8352 8487 8832 8856 9216 9512 9936 10086 10496 10672 10701 11136 11316 11776 11808 12006 12288 12528 13248 13448 13824 14268 14848 15088 15129 15744 16008 16384 16704 16974 17664 17712 18009 18432 19024 19872 20172 20992 21344 21402 22272 22632 23552 23616 24012 24576 25056 25461 26496 26896 27347 27648 28536 29696 30176 30258 31488 32016 32103 32768 33408 33948 35328 35424 36018 36864 38048 38663 39744 40344 41984 42688 42804 44544 45264 45387 47104 47232 48024 48749 49152 50112 50922 52992 53792 54694 55296 57072 59392 60352 60516 62976 64032 64206 66816 67896 70656 70848 72036 73728 76096 77326 79488 80688 82041 83968 85376 85608 89088 90528 90774 94208 94464 96048 97498 98304 100224 101844 105984 107584 109388 110592 114144 115989 118784 120704 121032 125952 128064 128412 133632 135792 141312 141696 144072 146247 147456 152192 154652 158976 161376 164082 167936 170752 171216 178176 181056 181548 188416 188928 192096 194996 200448 203688 211968 215168 218776 221184 228288 231978 237568 241408 242064 246123 251904 256128 256824 267264 271584 282624 283392 288144 292494 294912 304384 309304 317952 322752 328164 335872 341504 342432 347967 356352 362112 363096 376832 377856 384192 389992 400896 407376 423936 430336 437552 438741 442368 456576 463956 475136 482816 484128 492246 503808 512256 513648 534528 543168 565248 566784 576288 584988 608768 618608 635904 645504 656328 671744 683008 684864 695934 712704 724224 726192 738369 753664 755712 768384 779984 801792 814752 847872 860672 875104 877482 884736 913152 927912 950272 965632 968256 984492 1007616 1024512 1027296 1043901 1069056 1086336 1121227 1130496 1133568 1152576 1169976 1217536 1237216 1271808 1291008 1312656 1316223 1343488 1366016 1369728 1391868 1425408 1448448 1452384 1476738 1511424 1536768 1559968 1603584 1629504 1695744 1721344 1750208 1754964 1826304 1855824 1931264 1936512 1968984 2015232 2049024 2054592 2087802 2138112 2172672 2242454 2260992 2267136 2305152 2339952 2435072 2474432 2543616 2582016 2625312 2632446 2732032 2739456 2783736 2850816 2896896 2904768 2953476 3022848 3073536 3119936 3207168 3259008 3363681 3391488 3442688 3500416 3509928 3652608 3711648 3862528 3873024 3937968 4030464 4098048 4109184 4175604 4276224 4345344 4484908 4534272 4610304 4679904 4870144 4948864 5087232 5164032 5250624 5264892 5464064 5478912 5567472 5793792 5809536 5906952 6045696 6147072 6239872 6414336 6518016 6727362 6782976 6885376 7000832 7019856 7305216 7423296 7725056 7746048 7875936 8196096 8218368 8351208 8552448 8690688 8969816 9068544 9220608 9359808 9740288 9897728 10091043 10174464 10328064 10501248 10529784 10928128 10957824 11134944 11587584 11619072 11813904 12091392 12294144 12479744 12828672 13036032 13454724 13770752 14001664 14039712 14610432 14846592 15450112 15492096 15751872 16392192 16436736 16702416 17381376 17939632 18137088 18441216 18719616 19480576 19795456 20182086 20348928 20656128 21002496 21059568 21856256 21915648 22269888 23175168 23238144 23627808 24588288 24959488 25657344 26072064 26909448 27541504 28003328 28079424 29220864 29693184 30273129 30900224 30984192 31503744 32784384 32873472 33404832 34762752 35879264 36274176 36882432 37439232 38961152 39590912 40364172 41312256 42004992 42119136 43831296 44539776 46350336 46476288 47255616 49176576 49918976 52144128 53818896 55083008 56006656 56158848 58441728 59386368 60546258 61968384 63007488 65568768 65746944 66809664 69525504 71758528 73764864 74878464 79181824 80728344 82624512 84009984 84238272 87662592 89079552 92700672 92952576 94511232 98353152 99837952 104288256 107637792 112013312 112317696 116883456 118772736 121092516 123936768 126014976 131493888 133619328 139051008 143517056 147529728 149756928 158363648 161456688 165249024 168019968 168476544 175325184 178159104 185905152 189022464 196706304 199675904 208576512 215275584 224026624 224635392 237545472 242185032 247873536 252029952 262987776 267238656 278102016 287034112 295059456 299513856 316727296 322913376 336039936 336953088 350650368 356318208 371810304 378044928 399351808 417153024 430551168 448053248 449270784 475090944 484370064 495747072 504059904 525975552 534477312 574068224 590118912 599027712 633454592 645826752 672079872 673906176 712636416 743620608 756089856 798703616 834306048 861102336 896106496 898541568 950181888 968740128 1008119808 1051951104 1068954624 1148136448 1198055424 1266909184 1291653504 1344159744 1347812352 1425272832 1487241216 1512179712 1597407232 1722204672 1797083136 1900363776 1937480256 2016239616 2137909248 2296272896 2396110848 2583307008 2688319488 2695624704 2850545664 3024359424 3444409344 3594166272 3800727552 3874960512 4032479232 4275818496 4592545792 4792221696 5166614016 5391249408 5701091328 6048718848 6888818688 7188332544 7749921024 8064958464 8551636992 9185091584 10333228032 10782498816 11402182656 12097437696 13777637376 14376665088 15499842048 17103273984 18370183168 20666456064 21564997632 24194875392 27555274752 30999684096 34206547968 36740366336 41332912128 43129995264 55110549504 61999368192 82665824256 110221099008 123998736384 165331648512 247997472768 330663297024 495994945536 991989891072
• Sum of all divisors σ(n): 3252003984000
• Sum of proper divisors (its aliquot sum) s(n): 2260014092928
• 991989891072 is an abundant number, because the sum of its proper divisors (2260014092928) is greater than itself. Its abundance is 1268024201856

Bases of 991989891072

• Binary: 1110011011110111001101001000000000000000₂
• Hexadecimal: 0xE6F7348000
• Base-36: CNPP62O0

Squares and roots of 991989891072

• 991989891072 squared (991989891072²) is 984043943989038425309184
• 991989891072 cubed (991989891072³) is 976161644807747496684479844081205248
• The square root of 991989891072 is 995986.8930221923
• The cube root of 991989891072 is 9973.2280270145

Scales and comparisons

• 991,989,891,072 seconds is equal to 31,542 years, 10 weeks, 6 days, 11 hours, 31 minutes, 12 seconds.
• To count from 1 to 991,989,891,072 would take you about sixty-three thousand and eighty-four 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 991989891072 cubic inches would be around 831.1 feet tall.

Recreational maths with 991989891072

• 991989891072 backwards is 270198989199
• 991989891072 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 991989891072's digits is 72
• More coming soon!