Base | Representation |
---|---|
bin | 100011100000001000… |
… | …100001011100000111 |
3 | 10122101122122010210122 |
4 | 203200020201130013 |
5 | 1111032214200441 |
6 | 25302341212155 |
7 | 2516436145013 |
oct | 434010413407 |
9 | 118348563718 |
10 | 38120068871 |
11 | 1519186aa55 |
12 | 747a40105b |
13 | 3796757591 |
14 | 1bb8a49543 |
15 | ed194034b |
hex | 8e0221707 |
38120068871 has 4 divisors (see below), whose sum is σ = 39349748544. Its totient is φ = 36890389200.
The previous prime is 38120068867. The next prime is 38120068919. The reversal of 38120068871 is 17886002183.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17886002183 = 7 ⋅2555143169.
It is a cyclic number.
It is not a de Polignac number, because 38120068871 - 22 = 38120068867 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (38120068841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614839790 + ... + 614839851.
It is an arithmetic number, because the mean of its divisors is an integer number (9837437136).
Almost surely, 238120068871 is an apocalyptic number.
38120068871 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
38120068871 is a deficient number, since it is larger than the sum of its proper divisors (1229679673).
38120068871 is a wasteful number, since it uses less digits than its factorization.
38120068871 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1229679672.
The product of its (nonzero) digits is 129024, while the sum is 44.
The spelling of 38120068871 in words is "thirty-eight billion, one hundred twenty million, sixty-eight thousand, eight hundred seventy-one".
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