642643318125

Names of 642643318125

• Cardinal: 642643318125 can be written as Six hundred forty-two billion, six hundred forty-three million, three hundred eighteen thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 6.42643318125 × 10¹¹

Factors of 642643318125

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 344

Divisors of 642643318125

• Number of divisors d(n): 400
• Complete list of divisors:
  1 3 5 9 15 17 25 27 45 51 53 73 75 81 85 125 135 153 159 193 219 225 255 265 365 375 405 425 459 477 579 625 657 675 765 795 901 965 1095 1125 1241 1275 1325 1377 1431 1737 1825 1875 1971 2025 2125 2295 2385 2703 2895 3281 3285 3375 3723 3825 3869 3975 4293 4505 4825 5211 5475 5625 5913 6205 6375 6625 6885 7155 8109 8685 9125 9843 9855 10125 10229 10625 11169 11475 11607 11925 13515 14089 14475 15633 16405 16425 16875 18615 19125 19345 19875 21465 22525 24125 24327 26055 27375 29529 29565 30687 31025 31875 33125 33507 34425 34821 35775 40545 42267 43425 45625 49215 49275 50625 51145 55845 57375 58035 59625 65773 67575 70445 72375 72981 78165 82025 82125 88587 92061 93075 95625 96725 99375 100521 104463 107325 112625 120625 121635 126801 130275 136875 147645 147825 153435 155125 167535 172125 173893 174105 178875 197319 202725 211335 217125 239513 246075 246375 255725 265761 276183 279225 286875 290175 298125 313389 328865 337875 352225 361875 364905 380403 390825 410125 410625 442935 460305 465375 483625 502605 521679 522315 536625 563125 591957 608175 634005 651375 718539 738225 739125 746717 767175 775625 828549 837675 860625 869465 870525 894375 986595 1013625 1056675 1085625 1141209 1197565 1230375 1231875 1278625 1328805 1380915 1396125 1450875 1565037 1566945 1644325 1689375 1761125 1775871 1824525 1902015 1954125 2050625 2155617 2214675 2240151 2301525 2326875 2418125 2513025 2608395 2611575 2683125 2959785 3040875 3170025 3256875 3592695 3691125 3695625 3733585 3835875 4142745 4188375 4347325 4352625 4695111 4932975 5068125 5283375 5327613 5706045 5987825 6151875 6393125 6466851 6644025 6720453 6904575 6980625 7254375 7825185 7834725 8221625 8805625 8879355 9122625 9510075 9770625 10778085 11073375 11200755 11507625 12565125 12694189 13041975 13057875 14085333 14798925 15204375 15850125 17963475 18455625 18667925 19179375 19400553 20161359 20713725 20941875 21736625 21763125 23475555 24664875 26416875 26638065 28530225 29939125 32334255 33220125 33602265 34522875 38082567 39125925 39173625 41108125 44396775 45613125 47550375 53890425 55366875 56003775 57538125 60484077 62825625 63470945 65209875 65289375 70426665 73994625 79250625 89817375 93339625 97002765 100806795 103568625 108683125 114247701 117377775 123324375 133190325 142651125 149695625 161671275 166100625 168011325 172614375 190412835 195629625 195868125 221983875 237751875 269452125 280018875 302420385 317354725 326049375 342743103 352133325 369973125 449086875 466698125 485013825 504033975 517843125 571238505 586888875 665951625 713255625 808356375 840056625 952064175 978148125 1028229309 1109919375 1347260625 1400094375 1512101925 1586773625 1713715515 1760666625 2425069125 2520169875 2856192525 2934444375 3329758125 4041781875 4200283125 4760320875 5141146545 7560509625 7933868125 8568577575 8803333125 12125345625 12600849375 14280962625 23801604375 25705732725 37802548125 42842887875 71404813125 128528663625 214214439375 642643318125
• Sum of all divisors σ(n): 1318669978032
• Sum of proper divisors (its aliquot sum) s(n): 676026659907
• 642643318125 is an abundant number, because the sum of its proper divisors (676026659907) is greater than itself. Its abundance is 33383341782

Bases of 642643318125

• Binary: 1001010110100000100001101101010101101101₂
• Hexadecimal: 0x95A086D56D
• Base-36: 87858LT9

Squares and roots of 642643318125

• 642643318125 squared (642643318125²) is 412990434330709953515625
• 642643318125 cubed (642643318125³) is 265405543072172358114245759033203125
• The square root of 642643318125 is 801650.3714993213
• The cube root of 642643318125 is 8629.5867474953

Scales and comparisons

• 642,643,318,125 seconds is equal to 20,434 years, 3 weeks, 4 days, 8 hours, 48 minutes, 45 seconds.
• To count from 1 to 642,643,318,125 would take you about forty thousand, eight hundred sixty-eight 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 642643318125 cubic inches would be around 719.1 feet tall.

Recreational maths with 642643318125

• 642643318125 backwards is 521813346246
• 642643318125 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642643318125's digits is 45
• More coming soon!