21445639957665

Names of 21445639957665

• Cardinal: 21445639957665 can be written as Twenty-one trillion, four hundred forty-five billion, six hundred thirty-nine million, nine hundred fifty-seven thousand, six hundred sixty-five.

Scientific notation

• Scientific notation: 2.1445639957665 × 10¹³

Factors of 21445639957665

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 4545

Divisors of 21445639957665

• Number of divisors d(n): 400
• Complete list of divisors:
  1 3 5 7 9 11 15 21 27 33 35 45 49 55 63 77 99 105 121 135 147 165 189 231 245 297 315 343 363 385 441 495 539 605 693 735 847 945 1029 1089 1155 1323 1331 1485 1617 1715 1815 2079 2205 2401 2541 2695 3087 3267 3465 3773 3993 4235 4519 4851 5145 5445 5929 6615 6655 7203 7623 8085 9261 9317 10395 11319 11979 12005 12705 13557 14553 14641 15435 16335 17787 18865 19965 21609 22595 22869 24255 26411 27951 29645 31633 33957 35937 36015 38115 40671 41503 43923 46305 46585 49709 53361 56595 59895 64827 65219 67785 72765 73205 79233 83853 88935 94899 101871 102487 108045 114345 122013 124509 131769 132055 139755 149127 158165 160083 169785 179685 195657 203355 207515 219615 221431 237699 248545 251559 266805 284697 290521 307461 324135 326095 347963 373527 395307 396165 419265 447381 456533 474495 509355 512435 546799 586971 610065 622545 658845 664293 713097 717409 745635 800415 854091 871563 922383 978285 1043889 1107155 1120581 1188495 1257795 1342143 1369599 1423485 1452605 1537305 1550017 1640397 1739815 1760913 1867635 1976535 1992879 2152227 2236905 2282665 2435741 2614689 2733995 2767149 2934855 3131667 3195731 3321465 3565485 3587045 3827593 4108797 4270455 4357815 4611915 4650051 4921191 5021863 5219445 5602905 5978637 6014789 6456681 6710715 6847995 7307223 7750085 7844067 8201985 8804565 9395001 9587193 9964395 10761135 10850119 11482779 12178705 12326391 13073445 13835745 13950153 14763573 15065589 15658335 15978655 17050187 18044367 19137965 19370043 20543985 21921669 23250255 24605955 25109315 26793151 28761579 29893185 30073945 32283405 32550357 34448337 35153041 36536115 39220335 41850459 42103523 45196767 46975005 47935965 51150561 54133101 54250595 57413895 61631955 65765007 66162679 69750765 73817865 75327945 80379453 85250935 86284737 90221835 96850215 97651071 103345011 105459123 109608345 119351309 126310569 133965755 135590301 143807895 153451683 162399303 162751785 172241685 175765205 187552057 198488037 209252295 210517615 225983835 241138359 255752805 270665505 292953213 294724661 316377369 328825035 330813395 358053927 378931707 401897265 431423685 460355049 463138753 488255355 516725055 527295615 562656171 595464111 596756545 631552845 677951505 723415077 767258415 811996515 884173983 937760285 949132107 992440185 1074161781 1136795121 1205691795 1312864399 1389416259 1464766065 1473623305 1581886845 1687968513 1786392333 1790269635 1894658535 2063072627 2301775245 2315693765 2652521949 2813280855 2977320555 3222485343 3241971271 3617075385 3938593197 4168248777 4420869915 4745660535 5063905539 5370808905 5683975605 6189217881 6564321995 6947081295 7957565847 8439842565 8931961665 9725913813 10315363135 11815779591 12504746331 13262609745 14441508389 16112426715 16209856355 18567653643 19692965985 20841243885 22693798897 25319527695 29177741439 30946089405 35447338773 39787829235 43324525167 48629569065 55702960929 59078897955 62523731655 68081396691 72207541945 87533224317 92838268215 113468994485 129973575501 145888707195 158856592279 177236693865 204244190073 216622625835 278514804645 340406983455 389920726503 437666121585 476569776837 612732570219 649867877505 794282961395 1021220950365 1429709330511 1949603632515 2382848884185 3063662851095 4289127991533 7148546652555 21445639957665
• Sum of all divisors σ(n): 48935441904000
• Sum of proper divisors (its aliquot sum) s(n): 27489801946335
• 21445639957665 is an abundant number, because the sum of its proper divisors (27489801946335) is greater than itself. Its abundance is 6044161988670

Bases of 21445639957665

• Binary: 100111000000100110011110000000110110010100001₂
• Hexadecimal: 0x138133C06CA1
• Base-36: 7LNZOBJQ9

Squares and roots of 21445639957665

• 21445639957665 squared (21445639957665²) is 459915473193797662992252225
• 21445639957665 cubed (21445639957665³) is 9863181649073313355713739943772002054625
• The square root of 21445639957665 is 4630943.7437378787
• The cube root of 21445639957665 is 27783.0339855691

Scales and comparisons

• 21,445,639,957,665 seconds is equal to 681,905 years, 5 days, 10 hours, 27 minutes, 45 seconds.
• To count from 1 to 21,445,639,957,665 would take you about one million, seven hundred four thousand, seven hundred sixty-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 21445639957665 cubic inches would be around 2315.3 feet tall.

Recreational maths with 21445639957665

• 21445639957665 backwards is 56675993654412
• The number of decimal digits it has is: 14
• The sum of 21445639957665's digits is 72
• More coming soon!