64821804138

Names of 64821804138

• Cardinal: 64821804138 can be written as Sixty-four billion, eight hundred twenty-one million, eight hundred four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 6.4821804138 × 10¹⁰

Factors of 64821804138

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4552

Divisors of 64821804138

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 19 21 26 38 39 42 49 57 63 67 78 91 98 114 117 126 133 134 147 171 182 201 234 247 266 273 294 342 399 402 441 469 494 546 603 637 741 798 819 871 882 931 938 1197 1206 1273 1274 1407 1482 1638 1729 1742 1862 1911 2223 2394 2546 2613 2793 2814 3283 3458 3819 3822 4221 4441 4446 5187 5226 5586 5733 6097 6566 7638 7839 8379 8442 8882 8911 9849 10374 11457 11466 12103 12194 13323 15561 15678 16549 16758 17822 18291 19698 22914 24206 26646 26733 29547 31087 31122 33098 36309 36582 39969 42679 49647 53466 54873 57733 59094 62174 62377 72618 79938 80199 84379 85358 93261 99294 108927 109746 115466 115843 124754 128037 148941 160398 168758 173199 186522 187131 217609 217854 231686 253137 256074 279783 297547 297882 346398 347529 374262 384111 404131 435218 506274 519597 559566 561393 590653 595094 652827 695058 759411 768222 808262 810901 892641 1039194 1042587 1096927 1122786 1181306 1212393 1305654 1518822 1621802 1771959 1785282 1958481 2082829 2085174 2193854 2424786 2432703 2677923 2828917 3290781 3543918 3637179 3868111 3916962 4134571 4165658 4865406 5315877 5355846 5653393 5657834 6248487 6581562 7274358 7298109 7678489 7736222 8269142 8486751 9872343 10631754 11306786 11604333 12403713 12496974 14579803 14596218 15356978 16960179 16973502 18745461 19744686 23035467 23208666 24807426 25460253 27076777 29159606 33920358 34812999 37211139 37490922 39573751 43739409 46070934 50880537 50920506 53749423 54153554 69106401 69625998 73494109 74422278 79147502 81230331 87478818 101761074 107498846 118721253 131218227 138212802 146988218 161248269 162460662 189537439 220482327 237442506 243690993 262436454 277016257 322496538 356163759 379074878 440964654 483744807 487381986 514458763 554032514 568612317 661446981 712327518 831048771 967489614 1028917526 1137224634 1322893962 1543376289 1662097542 1705836951 2493146313 3086752578 3411673902 3601211341 4630128867 4986292626 7202422682 9260257734 10803634023 21607268046 32410902069 64821804138
• Sum of all divisors σ(n): 188011736640
• Sum of proper divisors (its aliquot sum) s(n): 123189932502
• 64821804138 is an abundant number, because the sum of its proper divisors (123189932502) is greater than itself. Its abundance is 58368128364

Bases of 64821804138

• Binary: 111100010111101011100011110001101010₂
• Hexadecimal: 0xF17AE3C6A
• Base-36: TS1886I

Squares and roots of 64821804138

• 64821804138 squared (64821804138²) is 4201866291705233923044
• 64821804138 cubed (64821804138³) is 272372553774981047389031532756072
• The square root of 64821804138 is 254601.2649968573
• The cube root of 64821804138 is 4017.0481564059

Scales and comparisons

• 64,821,804,138 seconds is equal to 2,061 years, 6 weeks, 6 days, 8 hours, 42 minutes, 18 seconds.
• To count from 1 to 64,821,804,138 would take you about four thousand, one hundred twenty-two 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 64821804138 cubic inches would be around 334.8 feet tall.

Recreational maths with 64821804138

• 64821804138 backwards is 83140812846
• The number of decimal digits it has is: 11
• The sum of 64821804138's digits is 45
• More coming soon!