81121236480

Names of 81121236480

• Cardinal: 81121236480 can be written as Eighty-one billion, one hundred twenty-one million, two hundred thirty-six thousand, four hundred eighty.

Scientific notation

• Scientific notation: 8.112123648 × 10¹⁰

Factors of 81121236480

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 189

Divisors of 81121236480

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 27 30 31 32 34 36 40 45 48 51 54 60 62 64 68 72 80 85 90 93 96 102 108 120 124 128 131 135 136 144 153 155 160 170 180 186 192 204 216 240 248 255 256 262 270 272 279 288 289 306 310 320 340 360 372 384 393 408 432 459 465 480 496 510 512 524 527 540 544 558 576 578 612 620 640 655 680 720 744 765 768 786 816 837 864 867 918 930 960 992 1020 1048 1054 1080 1088 1116 1152 1156 1179 1224 1240 1280 1310 1360 1395 1440 1445 1488 1530 1536 1572 1581 1632 1674 1728 1734 1836 1860 1920 1965 1984 2040 2096 2108 2160 2176 2227 2232 2295 2304 2312 2358 2448 2480 2560 2601 2620 2635 2720 2790 2880 2890 2976 3060 3144 3162 3264 3348 3456 3468 3537 3672 3720 3840 3930 3968 4061 4080 4185 4192 4216 4320 4335 4352 4454 4464 4590 4608 4624 4716 4743 4896 4960 5202 5240 5270 5440 5580 5760 5780 5895 5952 6120 6288 6324 6528 6681 6696 6912 6936 7074 7344 7440 7680 7803 7860 7905 7936 8122 8160 8370 8384 8432 8640 8670 8704 8908 8928 8959 9180 9248 9432 9486 9792 9920 10404 10480 10540 10880 11135 11160 11520 11560 11790 11904 12183 12240 12576 12648 13005 13056 13362 13392 13824 13872 14148 14229 14688 14880 15606 15720 15810 15872 16244 16320 16740 16768 16864 17280 17340 17685 17816 17856 17918 18360 18496 18864 18972 19584 19840 20043 20305 20808 20960 21080 21760 22270 22320 23040 23120 23580 23715 23808 24366 24480 25152 25296 26010 26112 26724 26784 26877 27744 28296 28458 29376 29760 31212 31440 31620 32488 32640 33405 33480 33536 33728 34560 34680 35370 35632 35712 35836 36549 36720 36992 37728 37859 37944 39015 39168 39680 40086 40610 41616 41920 42160 43520 44540 44640 44795 46240 47160 47430 47616 48732 48960 50304 50592 52020 53448 53568 53754 55488 56592 56916 58752 59520 60129 60915 62424 62880 63240 64976 65280 66810 66960 67072 67456 69037 69120 69360 70740 71145 71264 71424 71672 73098 73440 73984 75456 75718 75888 78030 78336 79360 80172 80631 81220 83232 83840 84320 89080 89280 89590 92480 94320 94860 97464 97920 100215 100608 101184 104040 106896 107136 107508 109647 110976 113184 113577 113832 117504 119040 120258 121830 124848 125760 126480 129952 130560 133620 133920 134385 134912 138074 138720 141480 142290 142528 142848 143344 146196 146880 147968 150912 151436 151776 156060 160344 161262 162440 166464 167680 168640 178160 178560 179180 182745 184960 188640 189295 189720 194928 195840 200430 201216 202368 207111 208080 213792 214272 215016 219294 221952 226368 227154 227664 235008 238080 240516 241893 243660 249696 251520 252960 259904 267240 267840 268770 269824 276148 277440 282960 284580 285056 286688 292392 293760 300645 301824 302872 303552 312120 320688 322524 324880 332928 335360 337280 340731 345185 356320 357120 358360 365490 369920 377280 378590 379440 389856 391680 400860 403155 404736 414222 416160 427584 428544 430032 438588 443904 452736 454308 455328 481032 483786 487320 499392 503040 505920 519808 534480 535680 537540 548235 552296 554880 565920 567885 569160 570112 573376 584784 587520 601290 603648 605744 607104 621333 624240 641376 645048 649760 665856 674560 681462 690370 712640 714240 716720 730980 739840 754560 757180 758880 779712 801720 806310 809472 828444 832320 855168 860064 877176 905472 908616 910656 962064 967572 974640 998784 1006080 1011840 1022193 1035555 1039616 1068960 1071360 1075080 1096470 1104592 1109760 1131840 1135770 1138320 1140224 1146752 1169568 1173629 1175040 1202580 1209465 1211488 1214208 1242666 1248480 1282752 1290096 1299520 1331712 1349120 1362924 1380740 1425280 1433440 1461960 1509120 1514360 1517760 1559424 1603440 1612620 1656888 1664640 1703655 1710336 1720128 1754352 1810944 1817232 1821312 1863999 1924128 1935144 1949280 1997568 2023680 2044386 2071110 2079232 2137920 2142720 2150160 2192940 2209184 2219520 2263680 2271540 2276640 2293504 2339136 2347258 2405160 2418930 2422976 2428416 2485332 2496960 2565504 2580192 2599040 2725848 2761480 2850560 2866880 2923920 3018240 3028720 3035520 3106665 3118848 3206880 3225240 3313776 3329280 3407310 3420672 3440256 3508704 3520887 3634464 3642624 3727998 3848256 3870288 3898560 3995136 4047360 4088772 4142220 4275840 4300320 4385880 4418368 4527360 4543080 4553280 4587008 4678272 4694516 4810320 4837860 4845952 4970664 4993920 5110965 5131008 5160384 5198080 5451696 5522960 5701120 5733760 5847840 5868145 6057440 6071040 6213330 6237696 6413760 6450480 6627552 6658560 6814620 6880512 7017408 7041774 7268928 7285248 7455996 7696512 7740576 7797120 8177544 8284440 8551680 8600640 8771760 8836736 9054720 9086160 9106560 9319995 9356544 9389032 9620640 9675720 9691904 9941328 9987840 10221930 10262016 10320768 10396160 10562661 10903392 11045920 11467520 11695680 11736290 12114880 12142080 12426660 12827520 12900960 13255104 13629240 13761024 14034816 14083548 14537856 14911992 15393024 15481152 15594240 16355088 16568880 17103360 17201280 17543520 17604435 17673472 18172320 18213120 18639990 18713088 18778064 19241280 19351440 19383808 19882656 19975680 20443860 20641536 21125322 21806784 22091840 22935040 23391360 23472580 24229760 24853320 25655040 25801920 26510208 27258480 28069632 28167096 29075712 29823984 30786048 30962304 31188480 31687983 32710176 33137760 34402560 35087040 35208870 35346944 36344640 36426240 37279980 37556128 38482560 38702880 39765312 40887720 41283072 42250644 43613568 44183680 46782720 46945160 48459520 49706640 51310080 51603840 52813305 53020416 54516960 56139264 56334192 58151424 59647968 61924608 63375966 65420352 66275520 68805120 70174080 70417740 72689280 74559960 75112256 76965120 77405760 79530624 81775440 84501288 87227136 88367360 93565440 93890320 96919040 99413280 103207680 105626610 106040832 109033920 112668384 119295936 123849216 126751932 130840704 132551040 140348160 140835480 145378560 149119920 150224512 153930240 154811520 158439915 159061248 163550880 169002576 174454272 176734720 187780640 198826560 206415360 211253220 218067840 225336768 238591872 253503864 261681408 265102080 280696320 281670960 290757120 298239840 300449024 309623040 316879830 318122496 327101760 338005152 375561280 397653120 422506440 436135680 450673536 477183744 507007728 523362816 530204160 563341920 596479680 600898048 619246080 633759660 654203520 676010304 751122560 795306240 845012880 872271360 901347072 954367488 1014015456 1126683840 1192959360 1267519320 1308407040 1352020608 1502245120 1590612480 1690025760 1802694144 2028030912 2253367680 2385918720 2535038640 2616814080 2704041216 3004490240 3380051520 4056061824 4506735360 4771837440 5070077280 5408082432 6760103040 8112123648 9013470720 10140154560 13520206080 16224247296 20280309120 27040412160 40560618240 81121236480
• Sum of all divisors σ(n): 318382479360
• Sum of proper divisors (its aliquot sum) s(n): 237261242880
• 81121236480 is an abundant number, because the sum of its proper divisors (237261242880) is greater than itself. Its abundance is 156140006400

Bases of 81121236480

• Binary: 1001011100011001100111101011000000000₂
• Hexadecimal: 0x12E333D600
• Base-36: 119LHMO0

Squares and roots of 81121236480

• 81121236480 squared (81121236480²) is 6580655008044082790400
• 81121236480 cubed (81121236480³) is 533830871100840342304736673792000
• The square root of 81121236480 is 284817.9005610427
• The cube root of 81121236480 is 4328.9063170537

Scales and comparisons

• 81,121,236,480 seconds is equal to 2,579 years, 21 weeks, 4 hours, 48 minutes.
• To count from 1 to 81,121,236,480 would take you about five thousand, one hundred fifty-eight 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 81121236480 cubic inches would be around 360.7 feet tall.

Recreational maths with 81121236480

• 81121236480 backwards is 08463212118
• 81121236480 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81121236480's digits is 36
• More coming soon!