Base | Representation |
---|---|
bin | 111011101000101000… |
… | …0000101100000000000 |
3 | 110020120001100011010000 |
4 | 1313101100011200000 |
5 | 4044234031102220 |
6 | 134455423040000 |
7 | 12152364021300 |
oct | 1672120054000 |
9 | 406501304100 |
10 | 128064706560 |
11 | 4a34820856a |
12 | 209a0740000 |
13 | c0cbc6479b |
14 | 62ac455600 |
15 | 34e7ed3390 |
hex | 1dd1405800 |
128064706560 has 1440 divisors, whose sum is σ = 561249168480. Its totient is φ = 27794866176.
The previous prime is 128064706541. The next prime is 128064706571. The reversal of 128064706560 is 65607460821.
128064706560 is a `hidden beast` number, since 1 + 2 + 80 + 6 + 4 + 7 + 0 + 6 + 560 = 666.
It is a tau number, because it is divible by the number of its divisors (1440).
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 934778812 + ... + 934778948.
It is an arithmetic number, because the mean of its divisors is an integer number (389756367).
Almost surely, 2128064706560 is an apocalyptic number.
128064706560 is a gapful number since it is divisible by the number (10) 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 128064706560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280624584240).
128064706560 is an abundant number, since it is smaller than the sum of its proper divisors (433184461920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128064706560 is a wasteful number, since it uses less digits than its factorization.
128064706560 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 213 (or 177 counting only the distinct ones).
The product of its (nonzero) digits is 483840, while the sum is 45.
The spelling of 128064706560 in words is "one hundred twenty-eight billion, sixty-four million, seven hundred six thousand, five hundred sixty".
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