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68838888883886 = 211711791523161659
BaseRepresentation
bin11111010011011110011011…
…00001001100011010101110
3100000201221012112012122112222
433221233031201030122232
533010324021023241021
6402224052102355342
720333305561006142
oct1751571541143256
9300657175178488
1068838888883886
111aa304551700a0
12787953072bb52
132c5463022acc4
1412ddb6a115222
157e59cdeb26ab
hex3e9bcd84c6ae

68838888883886 has 64 divisors (see below), whose sum is σ = 114946312550400. Its totient is φ = 30657017109600.

The previous prime is 68838888883873. The next prime is 68838888883901.

68838888883886 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 68838888883792 and 68838888883801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425746925 + ... + 425908583.

It is an arithmetic number, because the mean of its divisors is an integer number (1796036133600).

Almost surely, 268838888883886 is an apocalyptic number.

68838888883886 is a deficient number, since it is larger than the sum of its proper divisors (46107423666514).

68838888883886 is a wasteful number, since it uses less digits than its factorization.

68838888883886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163445.

The product of its digits is 347892350976, while the sum is 98.

The spelling of 68838888883886 in words is "sixty-eight trillion, eight hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred eighty-three thousand, eight hundred eighty-six".

Divisors: 1 2 11 22 71 142 179 358 781 1523 1562 1969 3046 3938 12709 16753 25418 33506 108133 139799 161659 216266 272617 279598 323318 545234 1189463 1778249 2378926 2998787 3556498 5997574 11477789 19355807 22955578 28936961 38711614 57873922 126255679 212913877 246206657 252511358 318306571 425827754 492413314 636613142 2054524231 2708273227 4109048462 5416546454 17480672647 22599766541 34961345294 44070991603 45199533082 88141983206 192287399117 384574798234 484780907633 969561815266 3129040403813 6258080807626 34419444441943 68838888883886