Base | Representation |
---|---|
bin | 101000110010001011… |
… | …1000111011000101001 |
3 | 22101001211002211202112 |
4 | 1101210113013120221 |
5 | 2413332240031311 |
6 | 104122442212105 |
7 | 6220251203552 |
oct | 1214427073051 |
9 | 271054084675 |
10 | 87583127081 |
11 | 3416443475a |
12 | 14b834b4035 |
13 | 834a1a9668 |
14 | 434bd29329 |
15 | 24290c128b |
hex | 14645c7629 |
87583127081 has 8 divisors (see below), whose sum is σ = 91438027200. Its totient is φ = 83732138512.
The previous prime is 87583127069. The next prime is 87583127143. The reversal of 87583127081 is 18072138578.
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 87583127081 - 214 = 87583110697 is a prime.
It is a super-2 number, since 2×875831270812 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (87583123081) 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, 932075 + ... + 1021728.
It is an arithmetic number, because the mean of its divisors is an integer number (11429753400).
Almost surely, 287583127081 is an apocalyptic number.
It is an amenable number.
87583127081 is a deficient number, since it is larger than the sum of its proper divisors (3854900119).
87583127081 is a wasteful number, since it uses less digits than its factorization.
87583127081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1955775.
The product of its (nonzero) digits is 752640, while the sum is 50.
The spelling of 87583127081 in words is "eighty-seven billion, five hundred eighty-three million, one hundred twenty-seven thousand, eighty-one".
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