Base | Representation |
---|---|
bin | 100101100100110111… |
… | …0111011010001111010 |
3 | 21201021200212112100210 |
4 | 1023021232323101322 |
5 | 2310230121330203 |
6 | 101023103011550 |
7 | 5554446054255 |
oct | 1131156732172 |
9 | 251250775323 |
10 | 80693933178 |
11 | 31249692381 |
12 | 13780299bb6 |
13 | 77bcb2b971 |
14 | 3c96db409c |
15 | 2174393803 |
hex | 12c9bbb47a |
80693933178 has 32 divisors (see below), whose sum is σ = 162404732160. Its totient is φ = 26728833600.
The previous prime is 80693933137. The next prime is 80693933179. The reversal of 80693933178 is 87133939608.
It is not an unprimeable number, because it can be changed into a prime (80693933179) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938703 + ... + 1021053.
It is an arithmetic number, because the mean of its divisors is an integer number (5075147880).
Almost surely, 280693933178 is an apocalyptic number.
80693933178 is an abundant number, since it is smaller than the sum of its proper divisors (81710798982).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80693933178 is a wasteful number, since it uses less digits than its factorization.
80693933178 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 83382.
The product of its (nonzero) digits is 5878656, while the sum is 57.
The spelling of 80693933178 in words is "eighty billion, six hundred ninety-three million, nine hundred thirty-three thousand, one hundred seventy-eight".
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