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68084765994 = 23731101517747
BaseRepresentation
bin111111011010001010…
…110001010100101010
320111201221111110201210
4333122022301110222
52103414200002434
651135552453550
74630126651020
oct773212612452
9214657443653
1068084765994
1126969091453
121124154a2b6
13656070baab
14341c504710
151b873e3ee9
hexfda2b152a

68084765994 has 64 divisors (see below), whose sum is σ = 162233229312. Its totient is φ = 18638856000.

The previous prime is 68084765981. The next prime is 68084766011. The reversal of 68084765994 is 49956748086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127372 + ... + 390375.

It is an arithmetic number, because the mean of its divisors is an integer number (2534894208).

Almost surely, 268084765994 is an apocalyptic number.

68084765994 is an abundant number, since it is smaller than the sum of its proper divisors (94148463318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68084765994 is a wasteful number, since it uses less digits than its factorization.

68084765994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517891.

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 68084765994 in words is "sixty-eight billion, eighty-four million, seven hundred sixty-five thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 7 14 21 31 42 62 93 101 186 202 217 303 434 606 651 707 1302 1414 2121 3131 4242 6262 9393 18786 21917 43834 65751 131502 517747 1035494 1553241 3106482 3624229 7248458 10872687 16050157 21745374 32100314 48150471 52292447 96300942 104584894 112351099 156877341 224702198 313754682 337053297 366047129 674106594 732094258 1098141387 1621065857 2196282774 3242131714 4863197571 9726395142 11347460999 22694921998 34042382997 68084765994