Base | Representation |
---|---|
bin | 100000000101011010… |
… | …1101000011010110000 |
3 | 20120211211222002220021 |
4 | 1000022311220122300 |
5 | 2112102213324310 |
6 | 51353002053224 |
7 | 4656303312133 |
oct | 1001265503260 |
9 | 216754862807 |
10 | 68901308080 |
11 | 27247aa0620 |
12 | 1142aaaa214 |
13 | 66609341a7 |
14 | 3498b3821a |
15 | 1bd3e375da |
hex | 100ad686b0 |
68901308080 has 80 divisors (see below), whose sum is σ = 175423843584. Its totient is φ = 24959671040.
The previous prime is 68901308059. The next prime is 68901308123. The reversal of 68901308080 is 8080310986.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (80).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82587 + ... + 380293.
Almost surely, 268901308080 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 68901308080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87711921792).
68901308080 is an abundant number, since it is smaller than the sum of its proper divisors (106522535504).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68901308080 is a wasteful number, since it uses less digits than its factorization.
68901308080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 297994 (or 297988 counting only the distinct ones).
The product of its (nonzero) digits is 82944, while the sum is 43.
The spelling of 68901308080 in words is "sixty-eight billion, nine hundred one million, three hundred eight thousand, eighty".
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