Base | Representation |
---|---|
bin | 10010101101100100… |
… | …100011011101111101 |
3 | 1220212020110210002022 |
4 | 102231210203131331 |
5 | 312122012110023 |
6 | 13121411205525 |
7 | 1310616263060 |
oct | 225544433575 |
9 | 56766423068 |
10 | 20091910013 |
11 | 85803a540a |
12 | 3a888a68a5 |
13 | 1b82748066 |
14 | d885ac8d7 |
15 | 7c8d737c8 |
hex | 4ad92377d |
20091910013 has 8 divisors (see below), whose sum is σ = 22996926720. Its totient is φ = 17195579280.
The previous prime is 20091910001. The next prime is 20091910039. The reversal of 20091910013 is 31001919002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20091910013 - 24 = 20091909997 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20091910063) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166533 + ... + 2175786.
It is an arithmetic number, because the mean of its divisors is an integer number (2874615840).
Almost surely, 220091910013 is an apocalyptic number.
It is an amenable number.
20091910013 is a deficient number, since it is larger than the sum of its proper divisors (2905016707).
20091910013 is an equidigital number, since it uses as much as digits as its factorization.
20091910013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4342987.
The product of its (nonzero) digits is 486, while the sum is 26.
The spelling of 20091910013 in words is "twenty billion, ninety-one million, nine hundred ten thousand, thirteen".
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