Base | Representation |
---|---|
bin | 111000101010010110… |
… | …0011010001010011010 |
3 | 102122002002102001121112 |
4 | 1301110230122022122 |
5 | 3443200040340210 |
6 | 131522104540322 |
7 | 11535226015241 |
oct | 1612454321232 |
9 | 378062361545 |
10 | 121680011930 |
11 | 47671215a34 |
12 | 1b6ba4816a2 |
13 | b622285a79 |
14 | 5c64507958 |
15 | 327270bd05 |
hex | 1c54b1a29a |
121680011930 has 8 divisors (see below), whose sum is σ = 219024021492. Its totient is φ = 48672004768.
The previous prime is 121680011909. The next prime is 121680011933. The reversal of 121680011930 is 39110086121.
121680011930 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 120386099089 + 1293912841 = 346967^2 + 35971^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not an unprimeable number, because it can be changed into a prime (121680011933) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6084000587 + ... + 6084000606.
Almost surely, 2121680011930 is an apocalyptic number.
121680011930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121680011930 is a deficient number, since it is larger than the sum of its proper divisors (97344009562).
121680011930 is a wasteful number, since it uses less digits than its factorization.
121680011930 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12168001200.
The product of its (nonzero) digits is 2592, while the sum is 32.
The spelling of 121680011930 in words is "one hundred twenty-one billion, six hundred eighty million, eleven thousand, nine hundred thirty".
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