Base | Representation |
---|---|
bin | 100000000100110011… |
… | …0100101010101100000 |
3 | 20120210101222022122210 |
4 | 1000021212211111200 |
5 | 2112031412223310 |
6 | 51350542002120 |
7 | 4655632215135 |
oct | 1001146452540 |
9 | 216711868583 |
10 | 68880586080 |
11 | 272373278a9 |
12 | 11423b76340 |
13 | 665955a257 |
14 | 34960a258c |
15 | 1bd21e2820 |
hex | 10099a5560 |
68880586080 has 96 divisors (see below), whose sum is σ = 217028657664. Its totient is φ = 18363516416.
The previous prime is 68880586069. The next prime is 68880586081. The reversal of 68880586080 is 8068508886.
It is a tau number, because it is divible by the number of its divisors (96).
It is a self number, because there is not a number n which added to its sum of digits gives 68880586080.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68880586081) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155177 + ... + 2186903.
It is an arithmetic number, because the mean of its divisors is an integer number (2260715184).
Almost surely, 268880586080 is an apocalyptic number.
68880586080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
68880586080 is an abundant number, since it is smaller than the sum of its proper divisors (148148071584).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68880586080 is a wasteful number, since it uses less digits than its factorization.
68880586080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36268 (or 36260 counting only the distinct ones).
The product of its (nonzero) digits is 5898240, while the sum is 57.
The spelling of 68880586080 in words is "sixty-eight billion, eight hundred eighty million, five hundred eighty-six thousand, eighty".
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