12991371372

Names of 12991371372

• Cardinal: 12991371372 can be written as Twelve billion, nine hundred ninety-one million, three hundred seventy-one thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 1.2991371372 × 10¹⁰

Factors of 12991371372

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 199

Divisors of 12991371372

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 17 18 19 21 28 34 36 38 42 49 51 57 63 68 76 84 98 102 114 119 126 133 147 151 153 171 196 204 228 238 252 266 294 302 306 323 342 357 399 441 453 476 532 588 604 612 646 684 714 798 833 882 906 931 969 1057 1071 1197 1292 1359 1428 1596 1666 1764 1812 1862 1938 2114 2142 2261 2394 2499 2567 2718 2793 2869 2907 3171 3332 3724 3876 4228 4284 4522 4788 4998 5134 5436 5586 5738 5814 6342 6783 7399 7497 7701 8379 8607 9044 9513 9996 10268 11172 11476 11628 12684 13566 14798 14994 15402 15827 16758 17214 17969 19026 20083 20349 22197 22801 23103 25821 27132 29596 29988 30804 31654 33516 34428 35938 38052 40166 40698 44394 45602 46206 47481 48773 51642 53907 60249 63308 66591 68403 71876 80332 81396 88788 91204 92412 94962 97546 103284 107814 120498 125783 133182 136806 140581 142443 146319 159607 161721 180747 189924 195092 205209 215628 240996 251566 266364 273612 281162 284886 292638 319214 323442 341411 361494 377349 387617 410418 421743 433219 438957 478821 503132 562324 569772 585276 638428 646884 682822 722988 754698 775234 820836 843486 866438 877914 957642 1024233 1117249 1132047 1162851 1265229 1299657 1365644 1436463 1509396 1550468 1686972 1732876 1755828 1915284 2048466 2234498 2264094 2325702 2389877 2530458 2599314 2713319 2872926 3032533 3072699 3351747 3488553 3898971 4096932 4468996 4528188 4651404 4779754 5060916 5198628 5426638 5745852 6065066 6145398 6703494 6977106 7169631 7364723 7797942 8139957 9097599 9559508 10055241 10853276 12130132 12290796 13406988 13954212 14339262 14729446 15595884 16279914 18195198 18993233 20110482 21227731 21508893 22094169 24419871 27292797 28678524 29458892 32559828 36390396 37986466 40220964 42455462 43017786 44188338 48839742 51553061 54585594 56979699 63683193 66282507 75972932 84910924 86035572 88376676 97679484 103106122 109171188 113959398 127366386 132565014 154659183 170939097 191049579 206212244 227918796 254732772 265130028 309318366 341878194 360871427 382099158 463977549 618636732 683756388 721742854 764198316 927955098 1082614281 1443485708 1855910196 2165228562 3247842843 4330457124 6495685686 12991371372
• Sum of all divisors σ(n): 42860595960
• Sum of proper divisors (its aliquot sum) s(n): 29869224588
• 12991371372 is an abundant number, because the sum of its proper divisors (29869224588) is greater than itself. Its abundance is 16877853216

Bases of 12991371372

• Binary: 1100000110010110001001100001101100₂
• Hexadecimal: 0x30658986C
• Base-36: 5YUQ6B0

Squares and roots of 12991371372

• 12991371372 squared (12991371372²) is 168775730125221162384
• 12991371372 cubed (12991371372³) is 2192628188637196184164060870848
• The square root of 12991371372 is 113979.6971920879
• The cube root of 12991371372 is 2350.8143471359

Scales and comparisons

• 12,991,371,372 seconds is equal to 413 years, 4 weeks, 3 days, 2 hours, 16 minutes, 12 seconds.
• To count from 1 to 12,991,371,372 would take you about eight hundred twenty-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 12991371372 cubic inches would be around 195.9 feet tall.

Recreational maths with 12991371372

• 12991371372 backwards is 27317319921
• The number of decimal digits it has is: 11
• The sum of 12991371372's digits is 45
• More coming soon!