Base | Representation |
---|---|
bin | 111011111110000100… |
… | …110111011101101001 |
3 | 20011012121100020122121 |
4 | 323332010313131221 |
5 | 2023333402341021 |
6 | 45325324551241 |
7 | 4436461634125 |
oct | 737604673551 |
9 | 204177306577 |
10 | 64392230761 |
11 | 25343810041 |
12 | 105909b2521 |
13 | 60c26ccac1 |
14 | 318bd48585 |
15 | 1a1d154741 |
hex | efe137769 |
64392230761 has 16 divisors (see below), whose sum is σ = 69000841728. Its totient is φ = 59948856000.
The previous prime is 64392230759. The next prime is 64392230783. The reversal of 64392230761 is 16703229346.
It is not a de Polignac number, because 64392230761 - 21 = 64392230759 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (64392230711) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31111 + ... + 360211.
It is an arithmetic number, because the mean of its divisors is an integer number (4312552608).
Almost surely, 264392230761 is an apocalyptic number.
It is an amenable number.
64392230761 is a deficient number, since it is larger than the sum of its proper divisors (4608610967).
64392230761 is a wasteful number, since it uses less digits than its factorization.
64392230761 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 329352.
The product of its (nonzero) digits is 326592, while the sum is 43.
The spelling of 64392230761 in words is "sixty-four billion, three hundred ninety-two million, two hundred thirty thousand, seven hundred sixty-one".
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