Base | Representation |
---|---|
bin | 111111111100001110… |
… | …111011110101110000 |
3 | 20120012202220112200000 |
4 | 333330032323311300 |
5 | 2111102002023432 |
6 | 51312410230000 |
7 | 4650236530233 |
oct | 777416736560 |
9 | 216182815600 |
10 | 68656282992 |
11 | 27131755650 |
12 | 11380a25300 |
13 | 6621c4402b |
14 | 347439541a |
15 | 1bbc68757c |
hex | ffc3bbd70 |
68656282992 has 480 divisors, whose sum is σ = 228666197760. Its totient is φ = 19752284160.
The previous prime is 68656282991. The next prime is 68656282993. The reversal of 68656282992 is 29928265686.
68656282992 is a `hidden beast` number, since 68 + 6 + 562 + 8 + 2 + 9 + 9 + 2 = 666.
It is an interprime number because it is at equal distance from previous prime (68656282991) and next prime (68656282993).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68656282991) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68043384 + ... + 68044392.
It is an arithmetic number, because the mean of its divisors is an integer number (476387912).
Almost surely, 268656282992 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 68656282992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114333098880).
68656282992 is an abundant number, since it is smaller than the sum of its proper divisors (160009914768).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68656282992 is a wasteful number, since it uses less digits than its factorization.
68656282992 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1123 (or 1105 counting only the distinct ones).
The product of its digits is 44789760, while the sum is 63.
The spelling of 68656282992 in words is "sixty-eight billion, six hundred fifty-six million, two hundred eighty-two thousand, nine hundred ninety-two".
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