Base | Representation |
---|---|
bin | 111111011001010001… |
… | …001101001000000000 |
3 | 20111200220002210111100 |
4 | 333121101031020000 |
5 | 2103401314104040 |
6 | 51134253214400 |
7 | 4626554460330 |
oct | 773121151000 |
9 | 214626083440 |
10 | 68069675520 |
11 | 26960614790 |
12 | 11238491400 |
13 | 655a557212 |
14 | 341a4d70c0 |
15 | 1b85e12b30 |
hex | fd944d200 |
68069675520 has 1920 divisors, whose sum is σ = 324854779392. Its totient is φ = 12740198400.
The previous prime is 68069675501. The next prime is 68069675521. The reversal of 68069675520 is 2557696086.
It is a happy number.
68069675520 is a `hidden beast` number, since 6 + 80 + 6 + 9 + 6 + 7 + 552 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (1920).
It is not an unprimeable number, because it can be changed into a prime (68069675521) by changing a digit.
It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1115896290 + ... + 1115896350.
Almost surely, 268069675520 is an apocalyptic number.
68069675520 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 68069675520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162427389696).
68069675520 is an abundant number, since it is smaller than the sum of its proper divisors (256785103872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68069675520 is a wasteful number, since it uses less digits than its factorization.
68069675520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 162 (or 143 counting only the distinct ones).
The product of its (nonzero) digits is 5443200, while the sum is 54.
The spelling of 68069675520 in words is "sixty-eight billion, sixty-nine million, six hundred seventy-five thousand, five hundred twenty".
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