Base | Representation |
---|---|
bin | 10010101101001010… |
… | …011101101010010001 |
3 | 1220211202121022000022 |
4 | 102231022131222101 |
5 | 312113234223411 |
6 | 13121004433225 |
7 | 1310504165540 |
oct | 225512355221 |
9 | 56752538008 |
10 | 20085070481 |
11 | 8577553803 |
12 | 3a86548815 |
13 | 1b811c1bb8 |
14 | d8770c157 |
15 | 7c8471edb |
hex | 4ad29da91 |
20085070481 has 8 divisors (see below), whose sum is σ = 22961222784. Its totient is φ = 17210632320.
The previous prime is 20085070471. The next prime is 20085070513. The reversal of 20085070481 is 18407058002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 20085070481 - 210 = 20085069457 is a prime.
It is a super-2 number, since 2×200850704812 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20085070471) 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 7 ways as a sum of consecutive naturals, for example, 403325 + ... + 450378.
It is an arithmetic number, because the mean of its divisors is an integer number (2870152848).
Almost surely, 220085070481 is an apocalyptic number.
It is an amenable number.
20085070481 is a deficient number, since it is larger than the sum of its proper divisors (2876152303).
20085070481 is an equidigital number, since it uses as much as digits as its factorization.
20085070481 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 857071.
The product of its (nonzero) digits is 17920, while the sum is 35.
The spelling of 20085070481 in words is "twenty billion, eighty-five million, seventy thousand, four hundred eighty-one".
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