Base | Representation |
---|---|
bin | 100001011000100010… |
… | …0100011101011001111 |
3 | 20212001012211110102212 |
4 | 1002301010203223033 |
5 | 2133310200114141 |
6 | 52533430341035 |
7 | 5115356655122 |
oct | 1026104435317 |
9 | 225035743385 |
10 | 71690238671 |
11 | 284492a8437 |
12 | 11a88aba77b |
13 | 69b6686b8c |
14 | 36812ba3b9 |
15 | 1ce8bd72eb |
hex | 10b1123acf |
71690238671 has 4 divisors (see below), whose sum is σ = 75907311552. Its totient is φ = 67473165792.
The previous prime is 71690238667. The next prime is 71690238691. The reversal of 71690238671 is 17683209617.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 71690238671 - 22 = 71690238667 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 (71690238661) 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 3 ways as a sum of consecutive naturals, for example, 2108536415 + ... + 2108536448.
It is an arithmetic number, because the mean of its divisors is an integer number (18976827888).
Almost surely, 271690238671 is an apocalyptic number.
71690238671 is a deficient number, since it is larger than the sum of its proper divisors (4217072881).
71690238671 is a wasteful number, since it uses less digits than its factorization.
71690238671 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4217072880.
The product of its (nonzero) digits is 762048, while the sum is 50.
The spelling of 71690238671 in words is "seventy-one billion, six hundred ninety million, two hundred thirty-eight thousand, six hundred seventy-one".
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