Base | Representation |
---|---|
bin | 111111100101010010… |
… | …100111000110111000 |
3 | 20112012221121222020110 |
4 | 333211102213012320 |
5 | 2104304432330210 |
6 | 51210300224320 |
7 | 4634554035012 |
oct | 774522470670 |
9 | 215187558213 |
10 | 68271370680 |
11 | 26a544552a7 |
12 | 11293b3b0a0 |
13 | 6590285c76 |
14 | 34391db1b2 |
15 | 1b989a4420 |
hex | fe54a71b8 |
68271370680 has 128 divisors (see below), whose sum is σ = 211695482880. Its totient is φ = 17595548160.
The previous prime is 68271370679. The next prime is 68271370693. The reversal of 68271370680 is 8607317286.
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, 2953327 + ... + 2976353.
It is an arithmetic number, because the mean of its divisors is an integer number (1653870960).
Almost surely, 268271370680 is an apocalyptic number.
68271370680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68271370680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105847741440).
68271370680 is an abundant number, since it is smaller than the sum of its proper divisors (143424112200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68271370680 is a wasteful number, since it uses less digits than its factorization.
68271370680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23869 (or 23865 counting only the distinct ones).
The product of its (nonzero) digits is 677376, while the sum is 48.
The spelling of 68271370680 in words is "sixty-eight billion, two hundred seventy-one million, three hundred seventy thousand, six hundred eighty".
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