Base | Representation |
---|---|
bin | 111111111111010011… |
… | …101010010100000000 |
3 | 20120100100221121012100 |
4 | 333333103222110000 |
5 | 2111203202303233 |
6 | 51321451430400 |
7 | 4651434055614 |
oct | 777723522400 |
9 | 216310847170 |
10 | 68707853568 |
11 | 27158879362 |
12 | 11396155400 |
13 | 662c82c273 |
14 | 347b17b344 |
15 | 1bc1e72813 |
hex | fff4ea500 |
68707853568 has 108 divisors (see below), whose sum is σ = 198190982080. Its totient is φ = 22892295168.
The previous prime is 68707853551. The next prime is 68707853593. The reversal of 68707853568 is 86535870786.
68707853568 is a `hidden beast` number, since 68 + 7 + 0 + 7 + 8 + 5 + 3 + 568 = 666.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6452793 + ... + 6463431.
Almost surely, 268707853568 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68707853568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99095491040).
68707853568 is an abundant number, since it is smaller than the sum of its proper divisors (129483128512).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68707853568 is a wasteful number, since it uses less digits than its factorization.
68707853568 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13464 (or 13447 counting only the distinct ones).
The product of its (nonzero) digits is 67737600, while the sum is 63.
The spelling of 68707853568 in words is "sixty-eight billion, seven hundred seven million, eight hundred fifty-three thousand, five hundred sixty-eight".
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