Base | Representation |
---|---|
bin | 100101011000101101… |
… | …0110000101101100111 |
3 | 21200020021021001210002 |
4 | 1022301122300231213 |
5 | 2303411203300311 |
6 | 100514411251515 |
7 | 5541363454601 |
oct | 1126132605547 |
9 | 250207231702 |
10 | 80285993831 |
11 | 3105a39451a |
12 | 13687749b9b |
13 | 775646a734 |
14 | 3c58b44171 |
15 | 214d66293b |
hex | 12b16b0b67 |
80285993831 has 8 divisors (see below), whose sum is σ = 80562924000. Its totient is φ = 80009184640.
The previous prime is 80285993807. The next prime is 80285993833. The reversal of 80285993831 is 13839958208.
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 80285993831 - 210 = 80285992807 is a prime.
It is a super-2 number, since 2×802859938312 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80285993833) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 1418075 + ... + 1473603.
It is an arithmetic number, because the mean of its divisors is an integer number (10070365500).
Almost surely, 280285993831 is an apocalyptic number.
80285993831 is a deficient number, since it is larger than the sum of its proper divisors (276930169).
80285993831 is a wasteful number, since it uses less digits than its factorization.
80285993831 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 60489.
The product of its (nonzero) digits is 3732480, while the sum is 56.
The spelling of 80285993831 in words is "eighty billion, two hundred eighty-five million, nine hundred ninety-three thousand, eight hundred thirty-one".
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