Base | Representation |
---|---|
bin | 10010101100111001… |
… | …000011111111110000 |
3 | 1220211110000112201022 |
4 | 102230321003333300 |
5 | 312111102241122 |
6 | 13120322555012 |
7 | 1310420336522 |
oct | 225471037760 |
9 | 56743015638 |
10 | 20080508912 |
11 | 8574a18612 |
12 | 3a84b08a68 |
13 | 1b80285849 |
14 | d86c81a12 |
15 | 7c7d70642 |
hex | 4ace43ff0 |
20080508912 has 20 divisors (see below), whose sum is σ = 40161018816. Its totient is φ = 9716375040.
The previous prime is 20080508893. The next prime is 20080508923. The reversal of 20080508912 is 21980508002.
20080508912 is an admirable number.
It is a super-2 number, since 2×200805089122 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 20241953 + ... + 20242944.
Almost surely, 220080508912 is an apocalyptic number.
It is an amenable number.
20080508912 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20080508912 is a wasteful number, since it uses less digits than its factorization.
20080508912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 40484936 (or 40484930 counting only the distinct ones).
The product of its (nonzero) digits is 11520, while the sum is 35.
The spelling of 20080508912 in words is "twenty billion, eighty million, five hundred eight thousand, nine hundred twelve".
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