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68307866870386 = 211131997698211901
BaseRepresentation
bin11111000100000001010100…
…01000111110001001110010
322221212011112200121100222111
433202000222020332021302
532423124002404323021
6401140111213555534
720250036422243443
oct1742005210761162
9287764480540874
1068307866870386
111a84622707a810
1277b26324a5baa
132c16534071230
1412c2192c492ca
157d6c9eb768e1
hex3e202a23e272

68307866870386 has 128 divisors (see below), whose sum is σ = 121348269504000. Its totient is φ = 28429885440000.

The previous prime is 68307866870381. The next prime is 68307866870387.

68307866870386 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (68307866870381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35932596036 + ... + 35932597936.

It is an arithmetic number, because the mean of its divisors is an integer number (948033355500).

Almost surely, 268307866870386 is an apocalyptic number.

68307866870386 is a deficient number, since it is larger than the sum of its proper divisors (53040402633614).

68307866870386 is a wasteful number, since it uses less digits than its factorization.

68307866870386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716.

The product of its (nonzero) digits is 2341011456, while the sum is 76.

The spelling of 68307866870386 in words is "sixty-eight trillion, three hundred seven billion, eight hundred sixty-six million, eight hundred seventy thousand, three hundred eighty-six".

Divisors: 1 2 11 13 22 26 143 199 286 398 769 821 1538 1642 1901 2189 2587 3802 4378 5174 8459 9031 9997 10673 16918 18062 19994 20911 21346 24713 28457 41822 49426 56914 109967 117403 153031 163379 219934 234806 271843 306062 326758 378299 543686 631349 756598 1262698 1461869 1560721 1683341 1797169 1989403 2123927 2923738 3121442 3366682 3594338 3978806 4161289 4247854 4917887 6944839 8207537 8322578 9835774 13889678 16080559 16415074 17167931 19004297 20289373 21883433 23363197 32161118 34335862 38008594 40578746 43766866 46726394 54096757 90282907 108193514 125638451 180565814 209047267 223183103 251276902 290911931 310583479 418094534 446366206 581823862 621166958 1200194449 1382022961 1633299863 2400388898 2764045922 3200031241 3266599726 3416418269 3781855103 4037585227 6400062482 6832836538 7563710206 8075170454 13202138939 15602527837 17966298493 26404277878 31205055674 35932596986 41600406133 44413437497 83200812266 88826874994 171627806207 238838695351 343255612414 477677390702 2627225648861 3104903039563 5254451297722 6209806079126 34153933435193 68307866870386