64921438512

Names of 64921438512

• Cardinal: 64921438512 can be written as Sixty-four billion, nine hundred twenty-one million, four hundred thirty-eight thousand, five hundred twelve.

Scientific notation

• Scientific notation: 6.4921438512 × 10¹⁰

Factors of 64921438512

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 19567

Divisors of 64921438512

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 31 36 42 48 56 62 63 72 84 93 107 112 124 126 144 168 186 214 217 248 252 279 321 336 372 428 434 496 504 558 642 651 744 749 856 868 963 1008 1116 1284 1302 1488 1498 1712 1736 1926 1953 2232 2247 2568 2604 2996 3317 3472 3852 3906 4464 4494 5136 5208 5992 6634 6741 7704 7812 8988 9951 10416 11984 13268 13482 15408 15624 17976 19417 19902 23219 26536 26964 29853 31248 35952 38834 39804 46438 53072 53928 58251 59706 69657 77668 79608 92876 107856 116502 119412 135919 139314 155336 159216 174753 185752 208971 233004 238824 271838 278628 310672 349506 371504 407757 417942 466008 477648 543676 557256 601927 699012 815514 835884 932016 1087352 1114512 1203854 1223271 1398024 1631028 1671768 1805781 2077619 2174704 2407708 2446542 2796048 3262056 3343536 3611562 4155238 4213489 4815416 4893084 5417343 6232857 6524112 7223124 8310476 8426978 9630832 9786168 10834686 12465714 12640467 14446248 14543333 16620952 16853956 18698571 19572336 21669372 24931428 25280934 28892496 29086666 33241904 33707912 37397142 37921401 43338744 43629999 49862856 50561868 58173332 64406189 67415824 74794284 75842802 86677488 87259998 99725712 101123736 116346664 128812378 130889997 149588568 151685604 174519996 193218567 202247472 232693328 257624756 261779994 299177136 303371208 349039992 386437134 450843323 515249512 523559988 579655701 606742416 698079984 772874268 901686646 1030499024 1047119976 1159311402 1352529969 1545748536 1803373292 2094239952 2318622804 2705059938 3091497072 3606746584 4057589907 4637245608 5410119876 7213493168 8115179814 9274491216 10820239752 16230359628 21640479504 32460719256 64921438512
• Sum of all divisors σ(n): 216358152192
• Sum of proper divisors (its aliquot sum) s(n): 151436713680
• 64921438512 is an abundant number, because the sum of its proper divisors (151436713680) is greater than itself. Its abundance is 86515275168

Bases of 64921438512

• Binary: 111100011101100111101000100100110000₂
• Hexadecimal: 0xF1D9E8930
• Base-36: TTOJQK0

Squares and roots of 64921438512

• 64921438512 squared (64921438512²) is 4214793178467396774144
• 64921438512 cubed (64921438512³) is 273630436176668142069296847433728
• The square root of 64921438512 is 254796.8573432569
• The cube root of 64921438512 is 4019.1052378549

Scales and comparisons

• 64,921,438,512 seconds is equal to 2,064 years, 15 weeks, 4 days, 12 hours, 55 minutes, 12 seconds.
• To count from 1 to 64,921,438,512 would take you about four thousand, one hundred twenty-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 64921438512 cubic inches would be around 334.9 feet tall.

Recreational maths with 64921438512

• 64921438512 backwards is 21583412946
• The number of decimal digits it has is: 11
• The sum of 64921438512's digits is 45
• More coming soon!