Base | Representation |
---|---|
bin | 10010101001111111… |
… | …100001000011101111 |
3 | 1220201001111101112021 |
4 | 102221333201003233 |
5 | 312011124303132 |
6 | 13111424251011 |
7 | 1306260035632 |
oct | 225177410357 |
9 | 56631441467 |
10 | 20031869167 |
11 | 854a516882 |
12 | 3a70770a67 |
13 | 1b7318562b |
14 | d8061dc19 |
15 | 7c3963997 |
hex | 4a9fe10ef |
20031869167 has 2 divisors, whose sum is σ = 20031869168. Its totient is φ = 20031869166.
The previous prime is 20031869147. The next prime is 20031869171. The reversal of 20031869167 is 76196813002.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 20031869167 - 215 = 20031836399 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (20031869147) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015934583 + 10015934584.
It is an arithmetic number, because the mean of its divisors is an integer number (10015934584).
Almost surely, 220031869167 is an apocalyptic number.
20031869167 is a deficient number, since it is larger than the sum of its proper divisors (1).
20031869167 is an equidigital number, since it uses as much as digits as its factorization.
20031869167 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 108864, while the sum is 43.
The spelling of 20031869167 in words is "twenty billion, thirty-one million, eight hundred sixty-nine thousand, one hundred sixty-seven".
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