Base | Representation |
---|---|
bin | 100100100011110110… |
… | …1001000100010101010 |
3 | 21111122122222102220102 |
4 | 1021013231020202222 |
5 | 2241243140101010 |
6 | 100022413425402 |
7 | 5446416413426 |
oct | 1110755104252 |
9 | 244578872812 |
10 | 78512425130 |
11 | 3032a243067 |
12 | 1327179b262 |
13 | 7532ba31b9 |
14 | 3b2b38bb86 |
15 | 2097acaba5 |
hex | 1247b488aa |
78512425130 has 16 divisors (see below), whose sum is σ = 143717660640. Its totient is φ = 30872682192.
The previous prime is 78512425111. The next prime is 78512425153. The reversal of 78512425130 is 3152421587.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66535364 + ... + 66536543.
It is an arithmetic number, because the mean of its divisors is an integer number (8982353790).
Almost surely, 278512425130 is an apocalyptic number.
78512425130 is a deficient number, since it is larger than the sum of its proper divisors (65205235510).
78512425130 is a wasteful number, since it uses less digits than its factorization.
78512425130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 133071973.
The product of its (nonzero) digits is 67200, while the sum is 38.
The spelling of 78512425130 in words is "seventy-eight billion, five hundred twelve million, four hundred twenty-five thousand, one hundred thirty".
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