7981381769920

Names of 7981381769920

• Cardinal: 7981381769920 can be written as Seven trillion, nine hundred eighty-one billion, three hundred eighty-one million, seven hundred sixty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 7.98138176992 × 10¹²

Factors of 7981381769920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 61785

Divisors of 7981381769920

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 130 157 160 199 208 260 314 320 398 416 520 628 785 796 832 995 1040 1256 1570 1592 1990 2041 2080 2512 2587 3140 3184 3980 4082 4160 5024 5174 6280 6368 7960 8164 10048 10205 10348 12560 12736 12935 15920 16328 20410 20696 25120 25870 31243 31840 32656 40820 41392 50240 51740 61409 62486 63680 65312 81640 82784 103480 122818 124972 130624 156215 163280 165568 206960 245636 249944 307045 312430 326560 406159 413920 491272 499888 614090 624860 653120 798317 812318 827840 982544 999776 1228180 1249720 1596634 1624636 1965088 1999552 2030795 2456360 2499440 3193268 3249272 3930176 3991585 4061590 4912720 4998880 6386536 6498544 7983170 8123180 9641213 9825440 9997760 12220391 12773072 12997088 15966340 16246360 19282426 19650880 24440782 25546144 25994176 31932680 32492720 38564852 48206065 48881564 51092288 61101955 63865360 64985440 77129704 96412130 97763128 122203910 125335769 127730720 129970880 154259408 158865083 192824260 195526256 244407820 250671538 255461440 308518816 317730166 385648520 391052512 488815640 501343076 617037632 626678845 635460332 771297040 782105024 794325415 977631280 1002686152 1253357690 1270920664 1542594080 1588650830 1918601387 1955262560 2005372304 2506715380 2541841328 3085188160 3177301660 3837202774 3910525120 4010744608 5013430760 5083682656 6354603320 7674405548 8021489216 9593006935 10026861520 10167365312 12709206640 15348811096 19186013870 20053723040 24941818031 25418413280 30697622192 38372027740 40107446080 49883636062 50836826560 61395244384 76744055480 99767272124 122790488768 124709090155 153488110960 199534544248 249418180310 306976221920 399069088496 498836360620 613952443840 798138176992 997672721240 1596276353984 1995345442480 3990690884960 7981381769920
• Sum of all divisors σ(n): 20701851408000
• Sum of proper divisors (its aliquot sum) s(n): 12720469638080
• 7981381769920 is an abundant number, because the sum of its proper divisors (12720469638080) is greater than itself. Its abundance is 4739087868160

Bases of 7981381769920

• Binary: 1110100001001001111011011001101101011000000₂
• Hexadecimal: 0x7424F6CDAC0
• Base-36: 2TULGMRWG

Squares and roots of 7981381769920

• 7981381769920 squared (7981381769920²) is 63702454957211311816806400
• 7981381769920 cubed (7981381769920³) is 508433612694636297775867275633983488000
• The square root of 7981381769920 is 2825133.9384036291
• The cube root of 7981381769920 is 19984.4727566219

Scales and comparisons

• 7,981,381,769,920 seconds is equal to 253,783 years, 13 weeks, 19 hours, 38 minutes, 40 seconds.
• To count from 1 to 7,981,381,769,920 would take you about six hundred thirty-four thousand, four hundred fifty-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 7981381769920 cubic inches would be around 1665.4 feet tall.

Recreational maths with 7981381769920

• 7981381769920 backwards is 0299671831897
• The number of decimal digits it has is: 13
• The sum of 7981381769920's digits is 70
• More coming soon!