Base | Representation |
---|---|
bin | 100101101011010000… |
… | …1001000010000110001 |
3 | 21201211122110121011112 |
4 | 1023112201020100301 |
5 | 2311200023421040 |
6 | 101100244123105 |
7 | 5562662136560 |
oct | 1132641102061 |
9 | 251748417145 |
10 | 80908420145 |
11 | 3134976a633 |
12 | 13820096495 |
13 | 78253b8c27 |
14 | 3cb7687bd7 |
15 | 2188110365 |
hex | 12d6848431 |
80908420145 has 64 divisors (see below), whose sum is σ = 115288842240. Its totient is φ = 53362353408.
The previous prime is 80908420069. The next prime is 80908420163. The reversal of 80908420145 is 54102480908.
It is not a de Polignac number, because 80908420145 - 220 = 80907371569 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51110024 + ... + 51111606.
It is an arithmetic number, because the mean of its divisors is an integer number (1801388160).
Almost surely, 280908420145 is an apocalyptic number.
It is an amenable number.
80908420145 is a deficient number, since it is larger than the sum of its proper divisors (34380422095).
80908420145 is a wasteful number, since it uses less digits than its factorization.
80908420145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2174.
The product of its (nonzero) digits is 92160, while the sum is 41.
The spelling of 80908420145 in words is "eighty billion, nine hundred eight million, four hundred twenty thousand, one hundred forty-five".
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