642669553890

Names of 642669553890

• Cardinal: 642669553890 can be written as Six hundred forty-two billion, six hundred sixty-nine million, five hundred fifty-three thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 6.4266955389 × 10¹¹

Factors of 642669553890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 259108

Divisors of 642669553890

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 7 9 10 13 14 15 18 21 26 27 30 35 39 42 45 54 63 65 70 78 90 91 101 105 117 126 130 135 182 189 195 202 210 234 270 273 303 315 351 378 390 455 505 546 585 606 630 702 707 819 909 910 945 1010 1170 1313 1365 1414 1515 1638 1755 1818 1890 2121 2457 2626 2727 2730 3030 3510 3535 3939 4095 4242 4545 4914 5454 6363 6565 7070 7878 8190 9090 9191 10605 11817 12285 12726 13130 13635 18382 19089 19695 21210 23634 24570 27270 27573 31815 35451 38178 39390 45955 55146 59085 63630 70902 82719 91910 95445 118170 137865 165438 177255 190890 248157 258977 275730 354510 413595 496314 517954 776931 827190 1240785 1294885 1553862 1812839 2330793 2481570 2589770 3366701 3625678 3884655 4661586 5438517 6733402 6992379 7769310 9064195 10100103 10877034 11653965 13984758 16315551 16833505 18128390 20200206 23307930 23566907 26156677 27192585 30300309 32631102 33667010 34961895 47133814 48946653 50500515 52313354 54385170 60600618 69923790 70700721 78470031 81577755 90900927 97893306 101001030 117834535 130783385 141401442 151501545 156940062 163155510 181801854 183096739 212102163 235410093 235669070 244733265 261566770 303003090 340036801 353503605 366193478 392350155 424204326 454504635 470820186 489466530 549290217 636306489 680073602 706230279 707007210 784700310 909009270 915483695 1020110403 1060510815 1098580434 1177050465 1272612978 1412460558 1647870651 1700184005 1830967390 2040220806 2121021630 2354100930 2380257607 2746451085 3060331209 3181532445 3295741302 3400368010 3531151395 4760515214 4943611953 5100552015 5492902170 6120662418 6363064890 7062302790 7140772821 8239353255 9180993627 9887223906 10201104030 11901288035 14281545642 15301656045 16478706510 18361987254 21422318463 23802576070 24718059765 30603312090 35703864105 42844636926 45904968135 49436119530 64266955389 71407728210 91809936270 107111592315 128533910778 214223184630 321334776945 642669553890
• Sum of all divisors σ(n): 2130166563840
• Sum of proper divisors (its aliquot sum) s(n): 1487497009950
• 642669553890 is an abundant number, because the sum of its proper divisors (1487497009950) is greater than itself. Its abundance is 844827456060

Bases of 642669553890

• Binary: 1001010110100010000101110010100011100010₂
• Hexadecimal: 0x95A21728E2
• Base-36: 878KUXGI

Squares and roots of 642669553890

• 642669553890 squared (642669553890²) is 413024155497171614132100
• 642669553890 cubed (642669553890³) is 265438049759161272411047926528869000
• The square root of 642669553890 is 801666.7349279251
• The cube root of 642669553890 is 8629.7041795259

Scales and comparisons

• 642,669,553,890 seconds is equal to 20,434 years, 47 weeks, 31 minutes, 30 seconds.
• To count from 1 to 642,669,553,890 would take you about forty thousand, eight hundred sixty-nine 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 642669553890 cubic inches would be around 719.1 feet tall.

Recreational maths with 642669553890

• 642669553890 backwards is 098355966246
• 642669553890 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642669553890's digits is 63
• More coming soon!