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68880608886 = 23233738934679
BaseRepresentation
bin100000000100110011…
…0101010111001110110
320120210102000110221110
41000021212222321312
52112031413441021
651350542255450
74655632341465
oct1001146527166
9216712013843
1068880608886
1127237342a51
1211423b87586
13665956774b
1434960aa9dc
151bd21e9476
hex10099aae76

68880608886 has 64 divisors (see below), whose sum is σ = 148019788800. Its totient is φ = 21312821376.

The previous prime is 68880608869. The next prime is 68880608897.

68880608886 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×688806088862 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1968895 + ... + 2003573.

It is an arithmetic number, because the mean of its divisors is an integer number (2312809200).

Almost surely, 268880608886 is an apocalyptic number.

68880608886 is an abundant number, since it is smaller than the sum of its proper divisors (79139179914).

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

68880608886 is a wasteful number, since it uses less digits than its factorization.

68880608886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35133.

The product of its (nonzero) digits is 56623104, while the sum is 66.

The spelling of 68880608886 in words is "sixty-eight billion, eight hundred eighty million, six hundred eight thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 23 37 46 69 74 111 138 222 389 778 851 1167 1702 2334 2553 5106 8947 14393 17894 26841 28786 34679 43179 53682 69358 86358 104037 208074 331039 662078 797617 993117 1283123 1595234 1986234 2392851 2566246 3849369 4785702 7698738 13490131 26980262 29511829 40470393 59023658 80940786 88535487 177070974 310273013 499134847 620546026 930819039 998269694 1497404541 1861638078 2994809082 11480101481 22960202962 34440304443 68880608886