161801420800

Names of 161801420800

• Cardinal: 161801420800 can be written as One hundred sixty-one billion, eight hundred one million, four hundred twenty thousand, eight hundred.

Scientific notation

• Scientific notation: 1.618014208 × 10¹¹

Factors of 161801420800

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 395030

Divisors of 161801420800

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 512 640 800 1024 1280 1600 2048 2560 3200 4096 5120 6400 8192 10240 12800 16384 20480 25600 40960 51200 81920 102400 204800 395023 409600 790046 1580092 1975115 3160184 3950230 6320368 7900460 9875575 12640736 15800920 19751150 25281472 31601840 39502300 50562944 63203680 79004600 101125888 126407360 158009200 202251776 252814720 316018400 404503552 505629440 632036800 809007104 1011258880 1264073600 1618014208 2022517760 2528147200 3236028416 4045035520 5056294400 6472056832 8090071040 10112588800 16180142080 20225177600 32360284160 40450355200 80900710400 161801420800
• Sum of all divisors σ(n): 401256293648
• Sum of proper divisors (its aliquot sum) s(n): 239454872848
• 161801420800 is an abundant number, because the sum of its proper divisors (239454872848) is greater than itself. Its abundance is 77653452048

Bases of 161801420800

• Binary: 10010110101100000111011100000000000000₂
• Hexadecimal: 0x25AC1DC000
• Base-36: 22BWDZB4

Squares and roots of 161801420800

• 161801420800 squared (161801420800²) is 26179699772898672640000
• 161801420800 cubed (161801420800³) is 4235912619372442567586086912000000
• The square root of 161801420800 is 402245.4733120063
• The cube root of 161801420800 is 5449.1334458173

Scales and comparisons

• 161,801,420,800 seconds is equal to 5,144 years, 40 weeks, 5 days, 15 hours, 6 minutes, 40 seconds.
• To count from 1 to 161,801,420,800 would take you about ten thousand, two hundred eighty-nine 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 161801420800 cubic inches would be around 454.1 feet tall.

Recreational maths with 161801420800

• 161801420800 backwards is 008024108161
• The number of decimal digits it has is: 12
• The sum of 161801420800's digits is 31
• More coming soon!