Base | Representation |
---|---|
bin | 111011111101010110… |
… | …100101000001100100 |
3 | 20011011202111202201200 |
4 | 323331112211001210 |
5 | 2023322301042422 |
6 | 45324212522500 |
7 | 4436253535446 |
oct | 737526450144 |
9 | 204152452650 |
10 | 64380096612 |
11 | 25337982517 |
12 | 10588920430 |
13 | 60c0041a30 |
14 | 318a4aa496 |
15 | 1a1c0592ac |
hex | efd5a5064 |
64380096612 has 144 divisors (see below), whose sum is σ = 178857767088. Its totient is φ = 19403504640.
The previous prime is 64380096611. The next prime is 64380096631. The reversal of 64380096612 is 21669008346.
It can be written as a sum of positive squares in 8 ways, for example, as 2465718336 + 61914378276 = 49656^2 + 248826^2 .
It is not an unprimeable number, because it can be changed into a prime (64380096611) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18179562 + ... + 18183102.
It is an arithmetic number, because the mean of its divisors is an integer number (1242067827).
Almost surely, 264380096612 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 64380096612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89428883544).
64380096612 is an abundant number, since it is smaller than the sum of its proper divisors (114477670476).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64380096612 is a wasteful number, since it uses less digits than its factorization.
64380096612 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4350 (or 4345 counting only the distinct ones).
The product of its (nonzero) digits is 373248, while the sum is 45.
The spelling of 64380096612 in words is "sixty-four billion, three hundred eighty million, ninety-six thousand, six hundred twelve".
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