812781370436400128

Names of 812781370436400128

• Cardinal: 812781370436400128 can be written as Eight hundred twelve quadrillion, seven hundred eighty-one trillion, three hundred seventy billion, four hundred thirty-six million, four hundred thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 8.12781370436400128 × 10¹⁷

Factors of 812781370436400128

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 212

Divisors of 812781370436400128

• Number of divisors d(n): 154
• Complete list of divisors:
  1 2 4 8 16 32 53 64 106 128 157 212 256 314 424 512 628 848 1024 1256 1696 2512 3392 5024 6784 8321 10048 13568 16642 20096 24649 27136 33284 40192 49298 54272 66568 80384 98596 133136 160768 197192 266272 394384 532544 788768 1065088 1306397 1577536 2130176 2612794 3155072 3869893 4260352 5225588 6310144 7739786 8520704 10451176 12620288 15479572 20902352 25240576 30959144 41804704 61918288 83609408 123836576 167218816 205104329 247673152 334437632 410208658 495346304 607573201 668875264 820417316 990692608 1215146402 1337750528 1640834632 1981385216 2430292804 3281669264 3962770432 4860585608 6563338528 9721171216 13126677056 19442342432 26253354112 32201379653 38884684864 52506708224 64402759306 77769369728 95388992557 105013416448 128805518612 155538739456 190777985114 210026832896 257611037224 311077478912 381555970228 515222074448 622154957824 763111940456 1030444148896 1526223880912 2060888297792 3052447761824 4121776595584 5055616605521 6104895523648 8243553191168 10111233211042 12209791047296 14976071831449 16487106382336 20222466422084 24419582094592 29952143662898 32974212764672 40444932844168 48839164189184 59904287325796 80889865688336 97678328378368 119808574651592 161779731376672 239617149303184 323559462753344 479234298606368 647118925506688 793731807066797 958468597212736 1294237851013376 1587463614133594 1916937194425472 2588475702026752 3174927228267188 3833874388850944 5176951404053504 6349854456534376 7667748777701888 12699708913068752 15335497555403776 25399417826137504 50798835652275008 101597671304550016 203195342609100032 406390685218200064 812781370436400128
• Sum of all divisors σ(n): 1666036727002815966
• Sum of proper divisors (its aliquot sum) s(n): 853255356566415838
• 812781370436400128 is an abundant number, because the sum of its proper divisors (853255356566415838) is greater than itself. Its abundance is 40473986130015710

Bases of 812781370436400128

• Binary: 101101000111100101000101100110100000111010101011010000000000₂
• Hexadecimal: 0xB479459A0EAB400
• Base-36: 66AYY6X0Q8ZK

Squares and roots of 812781370436400128

• 812781370436400128 squared (812781370436400128²) is 660613556128472687998475791718416384
• 812781370436400128 cubed (812781370436400128³) is 536934391478963767811984377391768022128784329934897152
• The square root of 812781370436400128 is 901543881.5922384861
• The cube root of 812781370436400128 is 933235.4914694869
• Being both a perfect square and a perfect cube, 812781370436400128 is also a perfect sixth number.

Scales and comparisons

• 812,781,370,436,400,128 seconds is equal to 25,843,933,482 years, 1 week, 3 days, 8 hours, 2 minutes, 8 seconds.
• To count from 1 to 812,781,370,436,400,128 would take you about seventy-seven billion, five hundred thirty-one million, eight hundred thousand, four hundred forty-six 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 812781370436400128 cubic inches would be around 77769.6 feet tall.

Recreational maths with 812781370436400128

• 812781370436400128 backwards is 821004634073187218
• The number of decimal digits it has is: 18
• The sum of 812781370436400128's digits is 65
• More coming soon!