161987985792

Names of 161987985792

• Cardinal: 161987985792 can be written as One hundred sixty-one billion, nine hundred eighty-seven million, nine hundred eighty-five thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 1.61987985792 × 10¹¹

Factors of 161987985792

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1131

Divisors of 161987985792

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 32 36 46 48 64 69 72 73 89 92 96 128 138 144 146 178 184 192 207 219 267 276 288 292 356 368 384 414 438 534 552 576 584 657 712 736 801 828 876 941 1068 1104 1152 1168 1314 1424 1472 1602 1656 1679 1752 1882 2047 2136 2208 2336 2628 2823 2848 2944 3204 3312 3358 3504 3764 4094 4272 4416 4672 5037 5256 5646 5696 6141 6408 6497 6624 6716 7008 7528 8188 8469 8544 8832 9344 10074 10512 11292 11392 12282 12816 12994 13248 13432 14016 15056 15111 16376 16938 17088 18423 19491 20148 21024 21643 22584 24564 25632 25988 26496 26864 28032 30112 30222 32752 33876 34176 36846 38982 40296 42048 43286 45168 49128 51264 51976 53728 58473 60224 60444 64929 65504 67752 68693 73692 77964 80592 83749 84096 86572 90336 98256 102528 103952 107456 116946 120448 120888 129858 131008 135504 137386 147384 149431 155928 161184 167498 173144 180672 194787 196512 206079 207904 214912 233892 241776 251247 259716 262016 271008 274772 294768 298862 311856 322368 334996 346288 361344 389574 393024 412158 415808 448293 467784 483552 502494 519432 542016 549544 589536 597724 618237 623712 644736 669992 692576 753741 779148 786048 824316 831616 896586 935568 967104 1004988 1038864 1084032 1099088 1179072 1195448 1236474 1247424 1339984 1344879 1385152 1507482 1558296 1579939 1648632 1793172 1871136 1926227 1934208 2009976 2077728 2198176 2358144 2390896 2472948 2494848 2679968 2689758 2770304 3014964 3116592 3159878 3297264 3586344 3742272 3852454 4019952 4155456 4396352 4739817 4781792 4945896 5359936 5379516 5778681 6029928 6113677 6233184 6319756 6594528 7172688 7484544 7704908 8039904 8310912 8792704 9479634 9563584 9891792 10719872 10759032 11557362 12059856 12227354 12466368 12639512 13189056 14219451 14345376 15409816 16079808 17336043 18341031 18959268 19127168 19783584 21518064 23114724 24119712 24454708 24932736 25279024 26378112 28438902 28690752 30819632 32159616 34672086 36682062 37918536 39567168 43036128 46229448 48239424 48909416 50558048 55023093 56877804 57381504 61639264 69344172 73364124 75837072 79134336 86072256 92458896 96478848 97818832 101116096 110046186 113755608 123278528 138688344 140614571 146728248 151674144 172144512 184917792 195637664 202232192 220092372 227511216 246557056 277376688 281229142 293456496 303348288 369835584 391275328 421843713 440184744 455022432 554753376 562458284 586912992 606696576 739671168 782550656 843687426 880369488 910044864 1109506752 1124916568 1173825984 1265531139 1687374852 1760738976 1820089728 2219013504 2249833136 2347651968 2531062278 3374749704 3521477952 4499666272 5062124556 6749499408 7042955904 8999332544 10124249112 13498998816 17998665088 20248498224 26997997632 40496996448 53995995264 80993992896 161987985792
• Sum of all divisors σ(n): 499137163200
• Sum of proper divisors (its aliquot sum) s(n): 337149177408
• 161987985792 is an abundant number, because the sum of its proper divisors (337149177408) is greater than itself. Its abundance is 175161191616

Bases of 161987985792

• Binary: 10010110110111001111001000000110000000₂
• Hexadecimal: 0x25B73C8180
• Base-36: 22EZGPS0

Squares and roots of 161987985792

• 161987985792 squared (161987985792²) is 26240107540949193867264
• 161987985792 cubed (161987985792³) is 4250582167523830074364214365913088
• The square root of 161987985792 is 402477.3109033601
• The cube root of 161987985792 is 5451.2270142715

Scales and comparisons

• 161,987,985,792 seconds is equal to 5,150 years, 37 weeks, 1 day, 22 hours, 43 minutes, 12 seconds.
• To count from 1 to 161,987,985,792 would take you about ten thousand, three hundred one 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 161987985792 cubic inches would be around 454.3 feet tall.

Recreational maths with 161987985792

• 161987985792 backwards is 297589789161
• 161987985792 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 161987985792's digits is 72
• More coming soon!