21157559920800

Names of 21157559920800

• Cardinal: 21157559920800 can be written as Twenty-one trillion, one hundred fifty-seven billion, five hundred fifty-nine million, nine hundred twenty thousand, eight hundred.

Scientific notation

• Scientific notation: 2.11575599208 × 10¹³

Factors of 21157559920800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 42587714

Divisors of 21157559920800

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 25 27 30 32 36 40 45 46 48 50 54 60 69 72 75 80 90 92 96 100 108 115 120 135 138 144 150 160 180 184 200 207 216 225 230 240 270 276 288 300 345 360 368 400 414 432 450 460 480 540 552 575 600 621 675 690 720 736 800 828 864 900 920 1035 1080 1104 1150 1200 1242 1350 1380 1440 1656 1725 1800 1840 2070 2160 2208 2300 2400 2484 2700 2760 3105 3312 3450 3600 3680 4140 4320 4600 4968 5175 5400 5520 6210 6624 6900 7200 8280 9200 9936 10350 10800 11040 12420 13800 15525 16560 18400 19872 20700 21600 24840 27600 31050 33120 41400 49680 55200 62100 82800 99360 124200 165600 248400 496800 42587681 85175362 127763043 170350724 212938405 255526086 340701448 383289129 425876810 511052172 638815215 681402896 766578258 851753620 979516663 1022104344 1064692025 1149867387 1277630430 1362805792 1533156516 1703507240 1916445645 1959033326 2044208688 2129384050 2299734774 2555260860 2938549989 3066313032 3194076075 3407014480 3832891290 3918066652 4088417376 4258768100 4599469548 4897583315 5110521720 5749336935 5877099978 6132626064 6388152150 6814028960 7665782580 7836133304 8517536200 8815649967 9198939096 9582228225 9795166630 10221043440 11498673870 11754199956 12265252128 12776304300 14692749945 15331565160 15672266608 17035072400 17631299934 18397878192 19164456450 19590333260 20442086880 22997347740 23508399912 24487916575 25552608600 26446949901 28746684675 29385499890 30663130320 31344533216 34070144800 35262599868 36795756384 38328912900 39180666520 44078249835 45994695480 47016799824 48975833150 51105217200 52893899802 57493369350 58770999780 61326260640 70525199736 73463749725 76657825800 78361333040 88156499670 91989390960 94033599648 97951666300 102210434400 105787799604 114986738700 117541999560 132234749505 141050399472 146927499450 153315651600 156722666080 176312999340 183978781920 195903332600 211575599208 220391249175 229973477400 235083999120 264469499010 282100798944 293854998900 306631303200 352625998680 391806665200 423151198416 440782498350 459946954800 470167998240 528938998020 587709997800 661173747525 705251997360 783613330400 846302396832 881564996700 919893909600 1057877996040 1175419995600 1322347495050 1410503994720 1763129993400 2115755992080 2350839991200 2644694990100 3526259986800 4231511984160 5289389980200 7052519973600 10578779960400 21157559920800
• Sum of all divisors σ(n): 79846793228160
• Sum of proper divisors (its aliquot sum) s(n): 58689233307360
• 21157559920800 is an abundant number, because the sum of its proper divisors (58689233307360) is greater than itself. Its abundance is 37531673386560

Bases of 21157559920800

• Binary: 100110011111000100000110101111110100010100000₂
• Hexadecimal: 0x133E20D7E8A0
• Base-36: 7HZNCWKO0

Squares and roots of 21157559920800

• 21157559920800 squared (21157559920800²) is 447642341802242502272640000
• 21157559920800 cubed (21157559920800³) is 9471019669768180405645910978406912000000
• The square root of 21157559920800 is 4599734.7663533819
• The cube root of 21157559920800 is 27658.0692607275

Scales and comparisons

• 21,157,559,920,800 seconds is equal to 672,744 years, 49 weeks, 6 days, 18 hours.
• To count from 1 to 21,157,559,920,800 would take you about one million, six hundred eighty-one thousand, eight 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 21157559920800 cubic inches would be around 2304.8 feet tall.

Recreational maths with 21157559920800

• 21157559920800 backwards is 00802995575112
• 21157559920800 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21157559920800's digits is 54
• More coming soon!