Base | Representation |
---|---|
bin | 1100001110101001… |
… | …10111100010110000 |
3 | 121221112212221022122 |
4 | 12013110313202300 |
5 | 101421213034330 |
6 | 3003250253412 |
7 | 321460440422 |
oct | 60724674260 |
9 | 17845787278 |
10 | 6565361840 |
11 | 2869a80584 |
12 | 1332887268 |
13 | 8082574bb |
14 | 463d3a812 |
15 | 2865b25e5 |
hex | 1875378b0 |
6565361840 has 80 divisors (see below), whose sum is σ = 16087943520. Its totient is φ = 2484817920.
The previous prime is 6565361791. The next prime is 6565361843. The reversal of 6565361840 is 481635656.
It is a tau number, because it is divible by the number of its divisors (80).
It is a junction number, because it is equal to n+sod(n) for n = 6565361791 and 6565361800.
It is not an unprimeable number, because it can be changed into a prime (6565361843) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482830 + ... + 1487250.
It is an arithmetic number, because the mean of its divisors is an integer number (201099294).
Almost surely, 26565361840 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 6565361840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8043971760).
6565361840 is an abundant number, since it is smaller than the sum of its proper divisors (9522581680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6565361840 is a wasteful number, since it uses less digits than its factorization.
6565361840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5430 (or 5424 counting only the distinct ones).
The product of its (nonzero) digits is 518400, while the sum is 44.
The square root of 6565361840 is about 81026.9204647443. The cubic root of 6565361840 is about 1872.4902090572.
The spelling of 6565361840 in words is "six billion, five hundred sixty-five million, three hundred sixty-one thousand, eight hundred forty".
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