Base | Representation |
---|---|
bin | 10010101100111100… |
… | …001110010111111111 |
3 | 1220211111120122210220 |
4 | 102230330032113333 |
5 | 312111310302410 |
6 | 13120352432423 |
7 | 1310430361335 |
oct | 225474162777 |
9 | 56744518726 |
10 | 20081337855 |
11 | 8575434397 |
12 | 3a85248713 |
13 | 1b804b5c47 |
14 | d87019b55 |
15 | 7c7e86070 |
hex | 4acf0e5ff |
20081337855 has 32 divisors (see below), whose sum is σ = 32392742400. Its totient is φ = 10622823552.
The previous prime is 20081337847. The next prime is 20081337893. The reversal of 20081337855 is 55873318002.
It is not a de Polignac number, because 20081337855 - 23 = 20081337847 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056526 + ... + 1075364.
It is an arithmetic number, because the mean of its divisors is an integer number (1012273200).
Almost surely, 220081337855 is an apocalyptic number.
20081337855 is a deficient number, since it is larger than the sum of its proper divisors (12311404545).
20081337855 is a wasteful number, since it uses less digits than its factorization.
20081337855 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19423.
The product of its (nonzero) digits is 201600, while the sum is 42.
The spelling of 20081337855 in words is "twenty billion, eighty-one million, three hundred thirty-seven thousand, eight hundred fifty-five".
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