81425340752

Names of 81425340752

• Cardinal: 81425340752 can be written as Eighty-one billion, four hundred twenty-five million, three hundred forty thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 8.1425340752 × 10¹⁰

Factors of 81425340752

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1366

Divisors of 81425340752

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 53 56 98 106 112 196 212 271 343 371 392 424 542 686 742 784 848 1033 1084 1372 1484 1897 2066 2168 2597 2744 2968 3794 4132 4336 5194 5488 5936 7231 7588 8264 10388 13279 14363 14462 15176 16528 18179 20776 26558 28726 28924 30352 36358 41552 50617 53116 54749 57452 57848 72716 92953 100541 101234 106232 109498 114904 115696 145432 185906 201082 202468 212464 218996 229808 279943 290864 354319 371812 383243 402164 404936 437992 559886 703787 708638 743624 766486 804328 809872 875984 1119772 1407574 1417276 1487248 1532972 1608656 1959601 2239544 2682701 2815148 2834552 3065944 3919202 4479088 4926509 5365402 5630296 5669104 6131888 7838404 9853018 10730804 11260592 13717207 14836979 15676808 18778907 19706036 21461608 27434414 29673958 31353616 37557814 39412072 42923216 54868828 59347916 75115628 78824144 96020449 103858853 109737656 118695832 150231256 192040898 207717706 219475312 237391664 300462512 384081796 415435412 727011971 768163592 830870824 1454023942 1536327184 1661741648 2908047884 5089083797 5816095768 10178167594 11632191536 20356335188 40712670376 81425340752
• Sum of all divisors σ(n): 188323660800
• Sum of proper divisors (its aliquot sum) s(n): 106898320048
• 81425340752 is an abundant number, because the sum of its proper divisors (106898320048) is greater than itself. Its abundance is 25472979296

Bases of 81425340752

• Binary: 1001011110101010101000001100101010000₂
• Hexadecimal: 0x12F5541950
• Base-36: 11EMJN0W

Squares and roots of 81425340752

• 81425340752 squared (81425340752²) is 6630086116579311925504
• 81425340752 cubed (81425340752³) is 539857021257574870167860439339008
• The square root of 81425340752 is 285351.2585428703
• The cube root of 81425340752 is 4334.3089192691

Scales and comparisons

• 81,425,340,752 seconds is equal to 2,589 years, 3 weeks, 5 days, 22 hours, 12 minutes, 32 seconds.
• To count from 1 to 81,425,340,752 would take you about five thousand, one hundred seventy-eight 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 81425340752 cubic inches would be around 361.2 feet tall.

Recreational maths with 81425340752

• 81425340752 backwards is 25704352418
• The number of decimal digits it has is: 11
• The sum of 81425340752's digits is 41
• More coming soon!