72661505664

Names of 72661505664

• Cardinal: 72661505664 can be written as Seventy-two billion, six hundred sixty-one million, five hundred five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 7.2661505664 × 10¹⁰

Factors of 72661505664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 282078

Divisors of 72661505664

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 61 64 66 88 96 122 128 132 176 183 192 244 264 352 366 384 488 528 671 704 732 976 1056 1342 1408 1464 1952 2013 2112 2684 2928 3904 4026 4224 5368 5856 7808 8052 10736 11712 16104 21472 23424 32208 42944 64416 85888 128832 257664 282001 564002 846003 1128004 1692006 2256008 3102011 3384012 4512016 6204022 6768024 9024032 9306033 12408044 13536048 17202061 18048064 18612066 24816088 27072096 34404122 36096128 37224132 49632176 51606183 54144192 68808244 74448264 99264352 103212366 108288384 137616488 148896528 189222671 198528704 206424732 275232976 297793056 378445342 397057408 412849464 550465952 567668013 595586112 756890684 825698928 1100931904 1135336026 1191172224 1513781368 1651397856 2201863808 2270672052 3027562736 3302795712 4541344104 6055125472 6605591424 9082688208 12110250944 18165376416 24220501888 36330752832 72661505664
• Sum of all divisors σ(n): 214005677760
• Sum of proper divisors (its aliquot sum) s(n): 141344172096
• 72661505664 is an abundant number, because the sum of its proper divisors (141344172096) is greater than itself. Its abundance is 68682666432

Bases of 72661505664

• Binary: 1000011101010111101101001011010000000₂
• Hexadecimal: 0x10EAF69680
• Base-36: XDOS8LC

Squares and roots of 72661505664

• 72661505664 squared (72661505664²) is 5279694405359504080896
• 72661505664 cubed (72661505664³) is 383630544939218717730255818194944
• The square root of 72661505664 is 269557.9820075821
• The cube root of 72661505664 is 4172.8694480653

Scales and comparisons

• 72,661,505,664 seconds is equal to 2,310 years, 21 weeks, 2 days, 15 hours, 34 minutes, 24 seconds.
• To count from 1 to 72,661,505,664 would take you about four thousand, six hundred twenty 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 72661505664 cubic inches would be around 347.7 feet tall.

Recreational maths with 72661505664

• 72661505664 backwards is 46650516627
• 72661505664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 72661505664's digits is 48
• More coming soon!