Base | Representation |
---|---|
bin | 111111111111010011… |
… | …100100100110011011 |
3 | 20120100100220102002210 |
4 | 333333103210212123 |
5 | 2111203201031141 |
6 | 51321451130203 |
7 | 4651433630451 |
oct | 777723444633 |
9 | 216310812083 |
10 | 68707830171 |
11 | 27158862822 |
12 | 11396143963 |
13 | 662c821716 |
14 | 347b1729d1 |
15 | 1bc1e6a916 |
hex | fff4e499b |
68707830171 has 32 divisors (see below), whose sum is σ = 94687312896. Its totient is φ = 44283456000.
The previous prime is 68707830161. The next prime is 68707830181. The reversal of 68707830171 is 17103870786.
It is an interprime number because it is at equal distance from previous prime (68707830161) and next prime (68707830181).
It is a de Polignac number, because none of the positive numbers 2k-68707830171 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 68707830171.
It is not an unprimeable number, because it can be changed into a prime (68707830101) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13132126 + ... + 13137356.
It is an arithmetic number, because the mean of its divisors is an integer number (2958978528).
Almost surely, 268707830171 is an apocalyptic number.
68707830171 is a deficient number, since it is larger than the sum of its proper divisors (25979482725).
68707830171 is a wasteful number, since it uses less digits than its factorization.
68707830171 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6003.
The product of its (nonzero) digits is 395136, while the sum is 48.
The spelling of 68707830171 in words is "sixty-eight billion, seven hundred seven million, eight hundred thirty thousand, one hundred seventy-one".
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