640664732160

Names of 640664732160

• Cardinal: 640664732160 can be written as Six hundred forty billion, six hundred sixty-four million, seven hundred thirty-two thousand, one hundred sixty.

Scientific notation

• Scientific notation: 6.4066473216 × 10¹¹

Factors of 640664732160

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 688

Divisors of 640664732160

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 256 257 288 320 360 384 421 480 512 514 576 640 720 768 771 842 960 1028 1152 1263 1280 1285 1440 1536 1542 1684 1920 2056 2105 2304 2313 2526 2560 2570 2880 3084 3368 3789 3840 3855 4112 4210 4608 4626 5052 5140 5760 6168 6315 6736 7578 7680 7710 8224 8420 9252 10104 10280 11520 11565 12336 12630 13472 15156 15420 16448 16840 18504 18945 20208 20560 23040 23130 24672 25260 26944 30312 30840 32896 33680 37008 37890 40416 41120 46260 49344 50520 53888 60624 61680 65792 66049 67360 74016 75780 80832 82240 92520 98688 101040 107776 108197 121248 123360 131584 132098 134720 148032 151560 161664 164480 185040 197376 198147 202080 215552 216394 242496 246720 264196 269440 296064 303120 323328 324591 328960 330245 370080 394752 396294 404160 432788 484992 493440 528392 538880 540985 592128 594441 606240 646656 649182 657920 660490 740160 792588 808320 865576 969984 973773 986880 990735 1056784 1077760 1081970 1184256 1188882 1212480 1298364 1320980 1480320 1585176 1616640 1622955 1731152 1939968 1947546 1973760 1981470 2113568 2163940 2377764 2424960 2596728 2641960 2960640 2972205 3170352 3233280 3245910 3462304 3895092 3962940 4227136 4327880 4755528 4849920 4868865 5193456 5283920 5921280 5944410 6340704 6491820 6924608 7790184 7925880 8454272 8655760 9511056 9699840 9737730 10386912 10567840 11888820 12681408 12983640 13849216 15580368 15851760 16908544 17311520 19022112 19475460 20773824 21135680 23777640 25362816 25967280 27698432 27806629 31160736 31703520 33817088 34623040 38044224 38950920 41547648 42271360 47555280 50725632 51934560 55396864 55613258 62321472 63407040 69246080 76088448 77901840 83095296 83419887 84542720 95110560 101451264 103869120 111226516 124642944 126814080 138492160 139033145 152176896 155803680 166190592 166839774 169085440 190221120 207738240 222453032 249285888 250259661 253628160 276984320 278066290 304353792 311607360 333679548 380442240 415476480 417099435 444906064 498571776 500519322 507256320 556132580 623214720 667359096 760884480 830952960 834198870 889812128 1001038644 1112265160 1246429440 1251298305 1334718192 1521768960 1668397740 1779624256 2002077288 2224530320 2492858880 2502596610 2669436384 3336795480 3559248512 4004154576 4449060640 5005193220 5338872768 6673590960 7118497024 8008309152 8898121280 10010386440 10677745536 13347181920 14236994048 16016618304 17796242560 20020772880 21355491072 26694363840 32033236608 35592485120 40041545760 42710982144 53388727680 64066473216 71184970240 80083091520 106777455360 128132946432 160166183040 213554910720 320332366080 640664732160
• Sum of all divisors σ(n): 2232760119876
• Sum of proper divisors (its aliquot sum) s(n): 1592095387716
• 640664732160 is an abundant number, because the sum of its proper divisors (1592095387716) is greater than itself. Its abundance is 951430655556

Bases of 640664732160

• Binary: 1001010100101010100110000000001000000000₂
• Hexadecimal: 0x952A980200
• Base-36: 86BF8N40

Squares and roots of 640664732160

• 640664732160 squared (640664732160²) is 410451299033644538265600
• 640664732160 cubed (640664732160³) is 262961671560113944936577494941696000
• The square root of 640664732160 is 800415.3497778513
• The cube root of 640664732160 is 8620.7213153137

Scales and comparisons

• 640,664,732,160 seconds is equal to 20,371 years, 8 weeks, 1 day, 1 hour, 36 minutes.
• To count from 1 to 640,664,732,160 would take you about forty thousand, seven hundred forty-two 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 640664732160 cubic inches would be around 718.4 feet tall.

Recreational maths with 640664732160

• 640664732160 backwards is 061237466046
• 640664732160 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640664732160's digits is 45
• More coming soon!