21007761385578240

Names of 21007761385578240

• Cardinal: 21007761385578240 can be written as Twenty-one quadrillion, seven trillion, seven hundred sixty-one billion, three hundred eighty-five million, five hundred seventy-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.100776138557824 × 10¹⁶

Factors of 21007761385578240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 60118364801

Divisors of 21007761385578240

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 16 20 21 24 26 28 30 32 35 39 40 42 48 52 56 60 64 65 70 78 80 84 91 96 104 105 112 120 128 130 140 156 160 168 182 192 195 208 210 224 240 256 260 273 280 312 320 336 364 384 390 416 420 448 455 480 520 546 560 624 640 672 728 768 780 832 840 896 910 960 1040 1092 1120 1248 1280 1344 1365 1456 1560 1664 1680 1792 1820 1920 2080 2184 2240 2496 2688 2730 2912 3120 3328 3360 3640 3840 4160 4368 4480 4992 5376 5460 5824 6240 6720 7280 8320 8736 8960 9984 10920 11648 12480 13440 14560 16640 17472 21840 23296 24960 26880 29120 34944 43680 49920 58240 69888 87360 116480 174720 349440 60118364771 120236729542 180355094313 240473459084 300591823855 360710188626 420828553397 480946918168 601183647710 721420377252 781538742023 841657106794 901775471565 961893836336 1202367295420 1262485660191 1442840754504 1563077484046 1683314213588 1803550943130 1923787672672 2104142766985 2344616226069 2404734590840 2524971320382 2885681509008 3126154968092 3366628427176 3607101886260 3847575345344 3907693710115 4208285533970 4689232452138 4809469181680 5049942640764 5470771194161 5771363018016 6252309936184 6312428300955 6733256854352 7214203772520 7695150690688 7815387420230 8416571067940 9378464904276 9618938363360 10099885281528 10941542388322 11542726036032 11723081130345 12504619872368 12624856601910 13466513708704 14428407545040 15390301381376 15630774840460 16412313582483 16833142135880 18756929808552 19237876726720 20199770563056 21883084776644 23085452072064 23446162260690 25009239744736 25249713203820 26933027417408 27353855970805 28856815090080 31261549680920 32824627164966 33666284271760 37513859617104 38475753453440 40399541126112 43766169553288 46170904144128 46892324521380 50018479489472 50499426407640 53866054834816 54707711941610 57713630180160 62523099361840 65649254329932 67332568543520 75027719234208 76951506906880 80799082252224 82061567912415 87532339106576 93784649042760 100036958978944 100998852815280 107732109669632 109415423883220 115427260360320 125046198723680 131298508659864 134665137087040 150055438468416 161598164504448 164123135824830 175064678213152 187569298085520 200073917957888 201997705630560 218830847766440 230854520720640 250092397447360 262597017319728 269330274174080 300110876936832 323196329008896 328246271649660 350129356426304 375138596171040 403995411261120 437661695532880 500184794894720 525194034639456 538660548348160 600221753873664 656492543299320 700258712852608 750277192342080 807990822522240 875323391065760 1000369589789440 1050388069278912 1312985086598640 1400517425705216 1500554384684160 1615981645044480 1750646782131520 2100776138557824 2625970173197280 3001108769368320 3501293564263040 4201552277115648 5251940346394560 7002587128526080 10503880692789120 21007761385578240
• Sum of all divisors σ(n): 82576662063146496
• Sum of proper divisors (its aliquot sum) s(n): 61568900677568256
• 21007761385578240 is an abundant number, because the sum of its proper divisors (61568900677568256) is greater than itself. Its abundance is 40561139291990016

Bases of 21007761385578240

• Binary: 1001010101000100111001010011010111010011101111100000000₂
• Hexadecimal: 0x4AA2729AE9DF00
• Base-36: 5QUMOCKNBPC

Squares and roots of 21007761385578240

• 21007761385578240 squared (21007761385578240²) is 441326038433392174111859161497600
• 21007761385578240 cubed (21007761385578240³) is 9271272108651234378332036254226201491720372224000
• The square root of 21007761385578240 is 144940544.3124119083
• The cube root of 21007761385578240 is 275926.4024584893

Scales and comparisons

• 21,007,761,385,578,240 seconds is equal to 667,981,830 years, 41 weeks, 3 hours, 44 minutes.
• To count from 1 to 21,007,761,385,578,240 would take you about two billion, three million, nine hundred forty-five thousand, four hundred ninety-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 21007761385578240 cubic inches would be around 22993.9 feet tall.

Recreational maths with 21007761385578240

• 21007761385578240 backwards is 04287558316770012
• The number of decimal digits it has is: 17
• The sum of 21007761385578240's digits is 66
• More coming soon!