640491146964

Names of 640491146964

• Cardinal: 640491146964 can be written as Six hundred forty billion, four hundred ninety-one million, one hundred forty-six thousand, nine hundred sixty-four.

Scientific notation

• Scientific notation: 6.40491146964 × 10¹¹

Factors of 640491146964

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 291

Divisors of 640491146964

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 47 54 94 108 141 188 239 282 423 478 564 717 846 956 1269 1434 1692 2151 2209 2538 2868 4302 4418 5076 6453 6627 8604 8836 11233 12906 13254 19881 22466 25812 26508 33699 39762 44932 57121 59643 67398 79524 101097 103823 114242 119286 134796 171363 202194 207646 228484 238572 303291 311469 342726 404388 415292 514089 527951 606582 622938 685452 934407 1028178 1055902 1213164 1245876 1542267 1583853 1868814 2056356 2111804 2684687 2803221 3084534 3167706 3737628 4751559 5369374 5606442 6169068 6335412 8054061 9503118 10738748 11212884 14254677 16108122 19006236 24162183 24813697 28509354 32216244 48324366 49627394 57018708 72486549 74441091 96648732 99254788 126180289 144973098 148882182 223323273 252360578 289946196 297764364 378540867 446646546 504721156 669969819 757081734 893293092 1135622601 1339939638 1514163468 2271245202 2679879276 3406867803 4542490404 5930473583 6813735606 11860947166 13627471212 17791420749 23721894332 35582841498 53374262247 71165682996 106748524494 160122786741 213497048988 320245573482 640491146964
• Sum of all divisors σ(n): 1703759366400
• Sum of proper divisors (its aliquot sum) s(n): 1063268219436
• 640491146964 is an abundant number, because the sum of its proper divisors (1063268219436) is greater than itself. Its abundance is 422777072472

Bases of 640491146964

• Binary: 1001010100100000001111110100111011010100₂
• Hexadecimal: 0x95203F4ED4
• Base-36: 868JW3X0

Squares and roots of 640491146964

• 640491146964 squared (640491146964²) is 410228909339260246417296
• 640491146964 cubed (640491146964³) is 262747984660493566623103186807489344
• The square root of 640491146964 is 800306.9079821815
• The cube root of 640491146964 is 8619.9426632383

Scales and comparisons

• 640,491,146,964 seconds is equal to 20,365 years, 33 weeks, 23 hours, 29 minutes, 24 seconds.
• To count from 1 to 640,491,146,964 would take you about forty thousand, seven hundred thirty-one 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 640491146964 cubic inches would be around 718.3 feet tall.

Recreational maths with 640491146964

• 640491146964 backwards is 469641194046
• 640491146964 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640491146964's digits is 54
• More coming soon!