Base | Representation |
---|---|
bin | 100000010011101101… |
… | …1000100110100101101 |
3 | 20122002021101011212020 |
4 | 1000213123010310231 |
5 | 2114043001321210 |
6 | 51512333100353 |
7 | 5004215541000 |
oct | 1004733046455 |
9 | 218067334766 |
10 | 69380885805 |
11 | 27473779450 |
12 | 115436276b9 |
13 | 67090b88aa |
14 | 35026d5537 |
15 | 1c110b9770 |
hex | 10276c4d2d |
69380885805 has 64 divisors (see below), whose sum is σ = 141225984000. Its totient is φ = 28833591360.
The previous prime is 69380885797. The next prime is 69380885881. The reversal of 69380885805 is 50858808396.
It is not a de Polignac number, because 69380885805 - 23 = 69380885797 is a prime.
It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 556365 + ... + 669554.
It is an arithmetic number, because the mean of its divisors is an integer number (2206656000).
Almost surely, 269380885805 is an apocalyptic number.
It is an amenable number.
69380885805 is an abundant number, since it is smaller than the sum of its proper divisors (71845098195).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
69380885805 is a wasteful number, since it uses less digits than its factorization.
69380885805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1225959 (or 1225945 counting only the distinct ones).
The product of its (nonzero) digits is 16588800, while the sum is 60.
The spelling of 69380885805 in words is "sixty-nine billion, three hundred eighty million, eight hundred eighty-five thousand, eight hundred five".
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