81990844416

Names of 81990844416

• Cardinal: 81990844416 can be written as Eighty-one billion, nine hundred ninety million, eight hundred forty-four thousand, four hundred sixteen.

Scientific notation

• Scientific notation: 8.1990844416 × 10¹⁰

Factors of 81990844416

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 72

Divisors of 81990844416

• Number of divisors d(n): 612
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 17 18 24 26 32 34 36 37 39 48 51 52 64 68 72 74 78 96 102 104 111 117 128 136 144 148 153 156 192 204 208 221 222 234 256 272 288 289 296 306 312 333 384 408 416 442 444 468 481 512 544 576 578 592 612 624 629 663 666 768 816 832 867 884 888 936 962 1024 1088 1152 1156 1184 1224 1248 1258 1326 1332 1443 1536 1632 1664 1734 1768 1776 1872 1887 1924 1989 2048 2176 2304 2312 2368 2448 2496 2516 2601 2652 2664 2886 3072 3264 3328 3468 3536 3552 3744 3757 3774 3848 3978 4096 4329 4352 4608 4624 4736 4896 4992 5032 5202 5304 5328 5661 5772 6144 6528 6656 6936 7072 7104 7488 7514 7548 7696 7956 8177 8192 8658 8704 9216 9248 9472 9792 9984 10064 10404 10608 10656 10693 11271 11322 11544 12288 13056 13312 13872 14144 14208 14976 15028 15096 15392 15912 16354 16384 17316 17408 18432 18496 18944 19584 19968 20128 20808 21216 21312 21386 22542 22644 23088 24531 24576 26112 26624 27744 28288 28416 29952 30056 30192 30784 31824 32079 32708 32768 33813 34632 34816 36864 36992 37888 39168 39936 40256 41616 42432 42624 42772 45084 45288 46176 49062 49152 52224 53248 55488 56576 56832 59904 60112 60384 61568 63648 64158 65416 65536 67626 69264 69632 73593 73728 73984 75776 78336 79872 80512 83232 84864 85248 85544 90168 90576 92352 96237 98124 98304 104448 106496 110976 113152 113664 119808 120224 120768 123136 127296 128316 130832 135252 138528 139009 139264 147186 147456 147968 151552 156672 159744 161024 166464 169728 170496 171088 180336 181152 184704 192474 196248 196608 208896 212992 221952 226304 227328 239616 240448 241536 246272 254592 256632 261664 270504 277056 278018 278528 294372 294912 295936 303104 313344 319488 322048 332928 339456 340992 342176 360672 362304 369408 384948 392496 417027 417792 425984 443904 452608 454656 479232 480896 483072 492544 509184 513264 523328 541008 554112 556036 557056 588744 589824 591872 606208 626688 638976 644096 665856 678912 681984 684352 721344 724608 738816 769896 784992 834054 835584 851968 887808 905216 909312 958464 961792 966144 985088 1018368 1026528 1046656 1082016 1108224 1112072 1114112 1177488 1183744 1212416 1251081 1253376 1277952 1288192 1331712 1357824 1363968 1368704 1442688 1449216 1477632 1539792 1569984 1668108 1671168 1775616 1810432 1818624 1916928 1923584 1932288 1970176 2036736 2053056 2093312 2164032 2216448 2224144 2354976 2367488 2424832 2502162 2506752 2555904 2576384 2663424 2715648 2727936 2737408 2885376 2898432 2955264 3079584 3139968 3336216 3342336 3551232 3620864 3637248 3833856 3847168 3864576 3940352 4073472 4106112 4186624 4328064 4432896 4448288 4709952 4734976 5004324 5013504 5152768 5326848 5431296 5455872 5474816 5770752 5796864 5910528 6159168 6279936 6672432 7102464 7241728 7274496 7667712 7694336 7729152 7880704 8146944 8212224 8373248 8656128 8865792 8896576 9419904 9469952 10008648 10027008 10305536 10653696 10862592 10911744 10949632 11541504 11593728 11821056 12318336 12559872 13344864 14204928 14483456 15388672 15458304 15761408 16293888 16424448 16746496 17312256 17731584 17793152 18839808 18939904 20017296 20611072 21307392 21725184 21823488 21899264 23083008 23187456 23642112 24636672 25119744 26689728 28409856 30777344 30916608 31522816 32587776 32848896 33492992 34624512 35463168 35586304 37679616 40034592 41222144 42614784 43450368 43798528 46166016 46374912 47284224 49273344 50239488 53379456 56819712 61554688 61833216 65175552 65697792 66985984 69249024 70926336 71172608 75359232 80069184 85229568 87597056 92332032 92749824 94568448 98546688 100478976 106758912 123109376 123666432 130351104 131395584 133971968 138498048 141852672 142345216 150718464 160138368 170459136 175194112 184664064 185499648 197093376 200957952 213517824 246218752 262791168 267943936 276996096 283705344 284690432 301436928 320276736 350388224 369328128 370999296 394186752 401915904 427035648 525582336 535887872 553992192 569380864 602873856 640553472 700776448 738656256 788373504 803831808 854071296 1051164672 1107984384 1138761728 1205747712 1281106944 1576747008 1607663616 1708142592 2102329344 2215968768 2277523456 2411495424 2562213888 3153494016 3416285184 4555046912 4822990848 5124427776 6306988032 6832570368 9110093824 10248855552 13665140736 20497711104 27330281472 40995422208 81990844416
• Sum of all divisors σ(n): 278291520052
• Sum of proper divisors (its aliquot sum) s(n): 196300675636
• 81990844416 is an abundant number, because the sum of its proper divisors (196300675636) is greater than itself. Its abundance is 114309831220

Bases of 81990844416

• Binary: 1001100010111000010010000000000000000₂
• Hexadecimal: 0x1317090000
• Base-36: 11NZ8CG0

Squares and roots of 81990844416

• 81990844416 squared (81990844416²) is 6722498568048718381056
• 81990844416 cubed (81990844416³) is 551183334179665257489361897783296
• The square root of 81990844416 is 286340.4344761665
• The cube root of 81990844416 is 4344.3197876155

Scales and comparisons

• 81,990,844,416 seconds is equal to 2,607 years, 2 weeks, 6 days, 2 hours, 33 minutes, 36 seconds.
• To count from 1 to 81,990,844,416 would take you about five thousand, two hundred fourteen 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 81990844416 cubic inches would be around 362 feet tall.

Recreational maths with 81990844416

• 81990844416 backwards is 61444809918
• The number of decimal digits it has is: 11
• The sum of 81990844416's digits is 54
• More coming soon!