Base | Representation |
---|---|
bin | 111111101001101010… |
… | …010110000101100000 |
3 | 20112102001121112220121 |
4 | 333221222112011200 |
5 | 2104432220420110 |
6 | 51221440050024 |
7 | 4636434242602 |
oct | 775152260540 |
9 | 215361545817 |
10 | 68344701280 |
11 | 26a918906a9 |
12 | 112b4603914 |
13 | 65a251c75b |
14 | 3444c49172 |
15 | 1ba013bcda |
hex | fe9a96160 |
68344701280 has 24 divisors (see below), whose sum is σ = 161464357152. Its totient is φ = 27337880448.
The previous prime is 68344701247. The next prime is 68344701281. The reversal of 68344701280 is 8210744386.
68344701280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68344701281) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213577032 + ... + 213577351.
It is an arithmetic number, because the mean of its divisors is an integer number (6727681548).
Almost surely, 268344701280 is an apocalyptic number.
It is an amenable number.
68344701280 is an abundant number, since it is smaller than the sum of its proper divisors (93119655872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68344701280 is a wasteful number, since it uses less digits than its factorization.
68344701280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 427154398 (or 427154390 counting only the distinct ones).
The product of its (nonzero) digits is 258048, while the sum is 43.
The spelling of 68344701280 in words is "sixty-eight billion, three hundred forty-four million, seven hundred one thousand, two hundred eighty".
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