81444995072

Names of 81444995072

• Cardinal: 81444995072 can be written as Eighty-one billion, four hundred forty-four million, nine hundred ninety-five thousand and seventy-two.

Scientific notation

• Scientific notation: 8.1444995072 × 10¹⁰

Factors of 81444995072

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 26
• Sum of prime factors: 101

Divisors of 81444995072

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 32 38 56 64 73 76 112 128 133 146 152 224 256 266 292 304 448 511 512 532 584 608 896 1022 1024 1064 1168 1216 1387 1792 2044 2048 2128 2336 2432 2774 3584 4088 4096 4256 4672 4864 5548 7168 8176 8192 8512 9344 9709 9728 11096 14336 16352 16384 17024 18688 19418 19456 22192 28672 32704 32768 34048 37376 38836 38912 44384 57344 65408 65536 68096 74752 77672 77824 88768 114688 130816 131072 136192 149504 155344 155648 177536 229376 261632 262144 272384 299008 310688 311296 355072 458752 523264 524288 544768 598016 621376 622592 710144 917504 1046528 1048576 1089536 1196032 1242752 1245184 1420288 1835008 2093056 2097152 2179072 2392064 2485504 2490368 2840576 3670016 4186112 4194304 4358144 4784128 4971008 4980736 5681152 7340032 8372224 8388608 8716288 9568256 9942016 9961472 11362304 14680064 16744448 17432576 19136512 19884032 19922944 22724608 29360128 33488896 34865152 38273024 39768064 39845888 45449216 58720256 66977792 69730304 76546048 79536128 79691776 90898432 133955584 139460608 153092096 159072256 159383552 181796864 267911168 278921216 306184192 318144512 363593728 535822336 557842432 612368384 636289024 727187456 1071644672 1115684864 1272578048 1454374912 2143289344 2545156096 2908749824 4286578688 5090312192 5817499648 10180624384 11634999296 20361248768 40722497536 81444995072
• Sum of all divisors σ(n): 198642225600
• Sum of proper divisors (its aliquot sum) s(n): 117197230528
• 81444995072 is an abundant number, because the sum of its proper divisors (117197230528) is greater than itself. Its abundance is 35752235456

Bases of 81444995072

• Binary: 1001011110110100000000000000000000000₂
• Hexadecimal: 0x12F6800000
• Base-36: 11EY8WE8

Squares and roots of 81444995072

• 81444995072 squared (81444995072²) is 6633287222278104285184
• 81444995072 cubed (81444995072³) is 540248045129600772120312962613248
• The square root of 81444995072 is 285385.6952827173
• The cube root of 81444995072 is 4334.6576274249

Scales and comparisons

• 81,444,995,072 seconds is equal to 2,589 years, 36 weeks, 2 days, 9 hours, 44 minutes, 32 seconds.
• To count from 1 to 81,444,995,072 would take you about five thousand, one hundred seventy-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 81444995072 cubic inches would be around 361.2 feet tall.

Recreational maths with 81444995072

• 81444995072 backwards is 27059944418
• The number of decimal digits it has is: 11
• The sum of 81444995072's digits is 53
• More coming soon!