161122790720

Names of 161122790720

• Cardinal: 161122790720 can be written as One hundred sixty-one billion, one hundred twenty-two million, seven hundred ninety thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.6112279072 × 10¹¹

Factors of 161122790720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1207

Divisors of 161122790720

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 64 76 80 95 152 160 190 304 320 361 380 608 722 760 1181 1216 1444 1520 1805 2362 2888 3040 3610 4724 5776 5905 6080 7220 9448 11552 11810 14440 18896 22439 23104 23620 28880 37792 44878 47240 57760 75584 89756 94480 112195 115520 179512 188960 224390 359024 377920 426341 448780 718048 852682 897560 1394761 1436096 1705364 1795120 2131705 2789522 3410728 3590240 4263410 5579044 6821456 6973805 7180480 8526820 11158088 13642912 13947610 17053640 22316176 26500459 27285824 27895220 34107280 44632352 53000918 55790440 68214560 89264704 106001836 111580880 132502295 136429120 212003672 223161760 265004590 424007344 446323520 503508721 530009180 848014688 1007017442 1060018360 1696029376 2014034884 2120036720 2517543605 4028069768 4240073440 5035087210 8056139536 8480146880 10070174420 16112279072 20140348840 32224558144 40280697680 80561395360 161122790720
• Sum of all divisors σ(n): 405272963646
• Sum of proper divisors (its aliquot sum) s(n): 244150172926
• 161122790720 is an abundant number, because the sum of its proper divisors (244150172926) is greater than itself. Its abundance is 83027382206

Bases of 161122790720

• Binary: 10010110000011101010101010110101000000₂
• Hexadecimal: 0x2583AAAD40
• Base-36: 220OCKZK

Squares and roots of 161122790720

• 161122790720 squared (161122790720²) is 25960553689400918118400
• 161122790720 cubed (161122790720³) is 4182836859072668012166819381248000
• The square root of 161122790720 is 401401.0347769423
• The cube root of 161122790720 is 5441.5044894445

Scales and comparisons

• 161,122,790,720 seconds is equal to 5,123 years, 10 weeks, 5 days, 2 hours, 45 minutes, 20 seconds.
• To count from 1 to 161,122,790,720 would take you about ten thousand, two 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 161122790720 cubic inches would be around 453.5 feet tall.

Recreational maths with 161122790720

• 161122790720 backwards is 027097221161
• 161122790720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 161122790720's digits is 38
• More coming soon!