64809905664

Names of 64809905664

• Cardinal: 64809905664 can be written as Sixty-four billion, eight hundred nine million, nine hundred five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.4809905664 × 10¹⁰

Factors of 64809905664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 66

Divisors of 64809905664

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 17 21 24 28 32 34 37 42 48 49 51 56 64 68 74 84 96 98 102 111 112 119 128 136 147 148 168 192 196 204 222 224 238 256 259 272 294 296 336 357 384 392 408 444 448 476 512 518 544 588 592 629 672 714 768 777 784 816 833 888 896 952 1036 1088 1176 1184 1258 1344 1369 1428 1536 1554 1568 1632 1666 1776 1792 1813 1887 1904 2072 2176 2352 2368 2499 2516 2688 2738 2856 3108 3136 3264 3332 3552 3584 3626 3774 3808 4107 4144 4352 4403 4704 4736 4998 5032 5376 5439 5476 5712 6216 6272 6528 6664 7104 7252 7548 7616 8214 8288 8704 8806 9408 9472 9583 9996 10064 10752 10878 10952 11424 12432 12544 13056 13209 13328 14208 14504 15096 15232 16428 16576 17612 18816 18944 19166 19992 20128 21756 21904 22848 23273 24864 25088 26112 26418 26656 28416 28749 29008 30192 30464 30821 32856 33152 35224 37632 38332 39984 40256 43512 43808 45696 46546 49728 50653 52836 53312 56832 57498 58016 60384 60928 61642 65712 66304 67081 69819 70448 75264 76664 79968 80512 87024 87616 91392 92463 93092 99456 101306 105672 106624 114996 116032 120768 123284 131424 132608 134162 139638 140896 151959 153328 159936 161024 162911 174048 175232 182784 184926 186184 198912 201243 202612 211344 213248 229992 232064 241536 246568 262848 268324 279276 281792 303918 306656 319872 322048 325822 348096 350464 354571 369852 372368 397824 402486 405224 422688 426496 459984 464128 483072 488733 493136 525696 536648 558552 563584 607836 613312 639744 651644 696192 700928 709142 739704 744736 804972 810448 845376 861101 919968 928256 966144 977466 986272 1051392 1063713 1073296 1117104 1127168 1140377 1215672 1226624 1279488 1303288 1392384 1418284 1479408 1489472 1609944 1620896 1690752 1722202 1839936 1954932 1972544 2102784 2127426 2146592 2234208 2254336 2280754 2431344 2453248 2481997 2583303 2606576 2784768 2836568 2958816 2978944 3219888 3241792 3381504 3421131 3444404 3679872 3909864 3945088 4254852 4293184 4468416 4561508 4862688 4906496 4963994 5166606 5213152 5673136 5917632 5957888 6027707 6439776 6483584 6763008 6842262 6888808 7359744 7445991 7819728 7890176 8509704 8586368 8936832 9123016 9725376 9927988 10333212 10426304 11346272 11835264 11915776 12055414 12879552 12967168 13684524 13777616 14719488 14891982 15639456 15780352 17019408 17172736 17873664 18083121 18246032 19450752 19855976 20666424 20852608 22692544 23670528 24110828 25759104 25934336 27369048 27555232 29783964 31278912 34038816 34345472 35747328 36166242 36492064 38901504 39711952 41332848 41705216 42193949 45385088 47341056 48221656 51518208 54738096 55110464 59567928 62557824 68077632 72332484 72984128 77803008 79423904 82665696 83410432 84387898 90770176 96443312 103036416 109476192 110220928 119135856 125115648 126581847 136155264 144664968 145968256 158847808 165331392 168775796 181540352 192886624 218952384 220441856 238271712 250231296 253163694 272310528 289329936 291936512 317695616 330662784 337551592 385773248 437904768 440883712 476543424 506327388 544621056 578659872 583873024 635391232 661325568 675103184 771546496 875809536 953086848 1012654776 1157319744 1270782464 1322651136 1350206368 1543092992 1751619072 1906173696 2025309552 2314639488 2700412736 3086185984 3812347392 4050619104 4629278976 5400825472 8101238208 9258557952 10801650944 16202476416 21603301888 32404952832 64809905664
• Sum of all divisors σ(n): 218568287520
• Sum of proper divisors (its aliquot sum) s(n): 153758381856
• 64809905664 is an abundant number, because the sum of its proper divisors (153758381856) is greater than itself. Its abundance is 88948476192

Bases of 64809905664

• Binary: 111100010110111110001010111000000000₂
• Hexadecimal: 0xF16F8AE00
• Base-36: TRU579C

Squares and roots of 64809905664

• 64809905664 squared (64809905664²) is 4200323872176579280896
• 64809905664 cubed (64809905664³) is 272222593914011297545086717394944
• The square root of 64809905664 is 254577.8970452855
• The cube root of 64809905664 is 4016.8023560489

Scales and comparisons

• 64,809,905,664 seconds is equal to 2,060 years, 39 weeks, 1 day, 15 hours, 34 minutes, 24 seconds.
• To count from 1 to 64,809,905,664 would take you about four thousand, one hundred twenty-one 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 64809905664 cubic inches would be around 334.7 feet tall.

Recreational maths with 64809905664

• 64809905664 backwards is 46650990846
• The number of decimal digits it has is: 11
• The sum of 64809905664's digits is 57
• More coming soon!