991978506540672

Names of 991978506540672

• Cardinal: 991978506540672 can be written as Nine hundred ninety-one trillion, nine hundred seventy-eight billion, five hundred six million, five hundred forty thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 9.91978506540672 × 10¹⁴

Factors of 991978506540672

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 13593579

Divisors of 991978506540672

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 48 56 57 64 76 84 96 112 114 128 133 152 168 192 224 228 266 304 336 384 399 448 456 532 608 672 798 896 912 1064 1216 1344 1429 1596 1824 2128 2432 2688 2858 3192 3648 4256 4287 5716 6384 7296 8512 8574 10003 11432 12768 17024 17148 20006 22864 25536 27151 30009 34296 40012 45728 51072 54302 60018 68592 80024 81453 91456 108604 120036 137184 160048 162906 182912 190057 217208 240072 274368 320096 325812 380114 434416 480144 548736 570171 640192 651624 760228 868832 960288 1140342 1280384 1303248 1520456 1737664 1920576 2280684 2606496 3040912 3475328 3841152 4561368 5212992 6081824 9122736 10425984 12163648 13592119 18245472 24327296 27184238 36490944 40776357 54368476 72981888 81552714 95144833 108736952 163105428 190289666 217473904 258250261 285434499 326210856 380579332 434947808 516500522 570868998 652421712 761158664 774750783 869895616 1033001044 1141737996 1304843424 1522317328 1549501566 1739791232 1807751827 2066002088 2283475992 2609686848 3044634656 3099003132 3615503654 4132004176 4566951984 5219373696 5423255481 6089269312 6198006264 7231007308 8264008352 9133903968 10846510962 12178538624 12396012528 14462014616 16528016704 18267807936 19423138051 21693021924 24792025056 28924029232 33056033408 36535615872 38846276102 43386043848 49584050112 57848058464 58269414153 77692552204 86772087696 99168100224 115696116928 116538828306 135961966357 155385104408 173544175392 231392233856 233077656612 271923932714 310770208816 347088350784 369039622969 407885899071 466155313224 543847865428 621540417632 694176701568 738079245938 815771798142 932310626448 1087695730856 1107118868907 1243080835264 1476158491876 1631543596284 1864621252896 2175391461712 2214237737814 2486161670528 2583277360783 2952316983752 3263087192568 3729242505792 4350782923424 4428475475628 5166554721566 5904633967504 6526174385136 7458485011584 7749832082349 8701565846848 8856950951256 10333109443132 11809267935008 13052348770272 15499664164698 17403131693696 17713901902512 20666218886264 23618535870016 26104697540544 30999328329396 35427803805024 41332437772528 47237071740032 52209395081088 61998656658792 70855607610048 82664875545056 123997313317584 141711215220096 165329751090112 247994626635168 330659502180224 495989253270336 991978506540672
• Sum of all divisors σ(n): 3172074597120000
• Sum of proper divisors (its aliquot sum) s(n): 2180096090579328
• 991978506540672 is an abundant number, because the sum of its proper divisors (2180096090579328) is greater than itself. Its abundance is 1188117584038656

Bases of 991978506540672

• Binary: 11100001100011001011111110100000011101011010000000₂
• Hexadecimal: 0x38632FE81D680
• Base-36: 9RMKMUO22O

Squares and roots of 991978506540672

• 991978506540672 squared (991978506540672²) is 984021357438662041884390211584
• 991978506540672 cubed (991978506540672³) is 976128036556128754316463110317837237981544448
• The square root of 991978506540672 is 31495690.2851909565
• The cube root of 991978506540672 is 99731.8987442107

Scales and comparisons

• 991,978,506,540,672 seconds is equal to 31,541,848 years, 6 weeks, 14 hours, 11 minutes, 12 seconds.
• To count from 1 to 991,978,506,540,672 would take you about seventy-eight million, eight hundred fifty-four thousand, six hundred twenty 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 991978506540672 cubic inches would be around 8311 feet tall.

Recreational maths with 991978506540672

• 991978506540672 backwards is 276045605879199
• The number of decimal digits it has is: 15
• The sum of 991978506540672's digits is 78
• More coming soon!