168438793761

Names of 168438793761

• Cardinal: 168438793761 can be written as One hundred sixty-eight billion, four hundred thirty-eight million, seven hundred ninety-three thousand, seven hundred sixty-one.

Scientific notation

• Scientific notation: 1.68438793761 × 10¹¹

Factors of 168438793761

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 15115

Divisors of 168438793761

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 7 9 21 27 61 63 81 183 189 331 427 549 567 993 1281 1647 2317 2979 3843 4941 6951 8937 11529 14713 20191 20853 26811 34587 44139 60573 62559 102991 132417 141337 181719 187677 308973 397251 424011 545157 897493 926919 1191753 1272033 1635471 2692479 2780757 3816099 4870003 6282451 8077437 8342271 11448297 14610009 18847353 24232311 34090021 43830027 56542059 72696933 102270063 131490081 169626177 297070183 306810189 394470243 508878531 891210549 920430567 2079491281 2673631647 2761291701 6238473843 8020894941 18715421529 24062684823 56146264587 168438793761
• Sum of all divisors σ(n): 293181040768
• Sum of proper divisors (its aliquot sum) s(n): 124742247007
• 168438793761 is a deficient number, because the sum of its proper divisors (124742247007) is less than itself. Its deficiency is 43696546754

Bases of 168438793761

• Binary: 10011100110111101111000000011000100001₂
• Hexadecimal: 0x2737BC0621
• Base-36: 25DO3X29

Squares and roots of 168438793761

• 168438793761 squared (168438793761²) is 28371627243660692525121
• 168438793761 cubed (168438793761³) is 4778882669958932282901290430570081
• The square root of 168438793761 is 410412.9551573635
• The cube root of 168438793761 is 5522.6481395393

Scales and comparisons

• 168,438,793,761 seconds is equal to 5,355 years, 43 weeks, 2 days, 1 hour, 49 minutes, 21 seconds.
• To count from 1 to 168,438,793,761 would take you about ten thousand, seven hundred eleven 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 168438793761 cubic inches would be around 460.2 feet tall.

Recreational maths with 168438793761

• 168438793761 backwards is 167397834861
• 168438793761 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 168438793761's digits is 63
• More coming soon!