Base | Representation |
---|---|
bin | 111011111011110110… |
… | …000111101110110111 |
3 | 20011002222221010010101 |
4 | 323323312013232313 |
5 | 2023244312421212 |
6 | 45321510534531 |
7 | 4435525603060 |
oct | 737366075667 |
9 | 204088833111 |
10 | 64354810807 |
11 | 25324681961 |
12 | 10580367447 |
13 | 60b7a2a711 |
14 | 3186da7567 |
15 | 1a19c12157 |
hex | efbd87bb7 |
64354810807 has 8 divisors (see below), whose sum is σ = 75536148896. Its totient is φ = 53670421152.
The previous prime is 64354810787. The next prime is 64354810811. The reversal of 64354810807 is 70801845346.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-64354810807 is a prime.
It is the 253683-rd Hogben number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (64354810007) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124236828 + ... + 124237345.
It is an arithmetic number, because the mean of its divisors is an integer number (9442018612).
Almost surely, 264354810807 is an apocalyptic number.
64354810807 is a deficient number, since it is larger than the sum of its proper divisors (11181338089).
64354810807 is a wasteful number, since it uses less digits than its factorization.
64354810807 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 248474217.
The product of its (nonzero) digits is 645120, while the sum is 46.
The spelling of 64354810807 in words is "sixty-four billion, three hundred fifty-four million, eight hundred ten thousand, eight hundred seven".
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