Base | Representation |
---|---|
bin | 100000000100110011… |
… | …0101010111001110110 |
3 | 20120210102000110221110 |
4 | 1000021212222321312 |
5 | 2112031413441021 |
6 | 51350542255450 |
7 | 4655632341465 |
oct | 1001146527166 |
9 | 216712013843 |
10 | 68880608886 |
11 | 27237342a51 |
12 | 11423b87586 |
13 | 665956774b |
14 | 34960aa9dc |
15 | 1bd21e9476 |
hex | 10099aae76 |
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".
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