640769461321728

Names of 640769461321728

• Cardinal: 640769461321728 can be written as Six hundred forty trillion, seven hundred sixty-nine billion, four hundred sixty-one million, three hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 6.40769461321728 × 10¹⁴

Factors of 640769461321728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 25
• Sum of prime factors: 472

Divisors of 640769461321728

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 467 512 768 934 1024 1401 1536 1868 2048 2802 3072 3736 4096 5604 6144 7472 8192 11208 12288 14944 16384 22416 24576 29888 32768 44832 49152 59776 65536 89664 98304 119552 131072 179328 196608 218089 239104 262144 358656 393216 436178 478208 524288 654267 717312 786432 872356 956416 1048576 1308534 1434624 1572864 1744712 1912832 2097152 2617068 2869248 3145728 3489424 3825664 5234136 5738496 6291456 6978848 7651328 10468272 11476992 13957696 15302656 20936544 22953984 27915392 30605312 41873088 45907968 55830784 61210624 83746176 91815936 101847563 111661568 122421248 167492352 183631872 203695126 223323136 244842496 305542689 334984704 367263744 407390252 446646272 489684992 611085378 669969408 734527488 814780504 893292544 979369984 1222170756 1339938816 1469054976 1629561008 1786585088 2444341512 2679877632 2938109952 3259122016 3573170176 4888683024 5359755264 6518244032 7146340352 9777366048 10719510528 13036488064 14292680704 19554732096 21439021056 26072976128 28585361408 39109464192 42878042112 52145952256 57170722816 78218928384 85756084224 104291904512 114341445632 156437856768 171512168448 208583809024 228682891264 312875713536 343024336896 417167618048 457365782528 625751427072 686048673792 834335236096 1251502854144 1372097347584 1668670472192 2503005708288 3337340944384 5006011416576 6674681888768 10012022833152 13349363777536 20024045666304 26698727555072 40048091332608 53397455110144 80096182665216 106794910220288 160192365330432 213589820440576 320384730660864 640769461321728
• Sum of all divisors σ(n): 1712384933257440
• Sum of proper divisors (its aliquot sum) s(n): 1071615471935712
• 640769461321728 is an abundant number, because the sum of its proper divisors (1071615471935712) is greater than itself. Its abundance is 430846010613984

Bases of 640769461321728

• Binary: 10010001101100011011000100001000000000000000000000₂
• Hexadecimal: 0x246C6C4200000
• Base-36: 6B4TFD3DHC

Squares and roots of 640769461321728

• 640769461321728 squared (640769461321728²) is 410585502562537475400724905984
• 640769461321728 cubed (640769461321728³) is 263090651303508109473263313902367777176420352
• The square root of 640769461321728 is 25313424.5277427447
• The cube root of 640769461321728 is 86211.9103146957

Scales and comparisons

• 640,769,461,321,728 seconds is equal to 20,374,486 years, 43 weeks, 4 days, 17 hours, 48 minutes, 48 seconds.
• To count from 1 to 640,769,461,321,728 would take you about fifty million, nine hundred thirty-six thousand, two hundred seventeen 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 640769461321728 cubic inches would be around 7184.3 feet tall.

Recreational maths with 640769461321728

• 640769461321728 backwards is 827123164967046
• The number of decimal digits it has is: 15
• The sum of 640769461321728's digits is 66
• More coming soon!