Base | Representation |
---|---|
bin | 111111101001010000… |
… | …010110011010000000 |
3 | 20112101120210100021020 |
4 | 333221100112122000 |
5 | 2104423444334343 |
6 | 51221034025440 |
7 | 4636322311500 |
oct | 775120263200 |
9 | 215346710236 |
10 | 68337886848 |
11 | 26a88a56940 |
12 | 112b2278280 |
13 | 65a0ca4b4a |
14 | 3443d93a00 |
15 | 1b9e742b83 |
hex | fe9416680 |
68337886848 has 384 divisors, whose sum is σ = 236002818240. Its totient is φ = 17315020800.
The previous prime is 68337886843. The next prime is 68337886867. The reversal of 68337886848 is 84868873386.
It is a tau number, because it is divible by the number of its divisors (384).
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (68337886843) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8481990 + ... + 8490042.
Almost surely, 268337886848 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 68337886848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118001409120).
68337886848 is an abundant number, since it is smaller than the sum of its proper divisors (167664931392).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68337886848 is a wasteful number, since it uses less digits than its factorization.
68337886848 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8136 (or 8117 counting only the distinct ones).
The product of its digits is 297271296, while the sum is 69.
The spelling of 68337886848 in words is "sixty-eight billion, three hundred thirty-seven million, eight hundred eighty-six thousand, eight hundred forty-eight".
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