Base | Representation |
---|---|
bin | 101000111110000000… |
… | …1111101000101110111 |
3 | 22102002111022220210002 |
4 | 1101330001331011313 |
5 | 2420140414424304 |
6 | 104230105421515 |
7 | 6233142433154 |
oct | 1217401750567 |
9 | 272074286702 |
10 | 87980233079 |
11 | 34348603332 |
12 | 1507449a89b |
13 | 83b154691b |
14 | 438897922b |
15 | 244ddb231e |
hex | 147c07d177 |
87980233079 has 2 divisors, whose sum is σ = 87980233080. Its totient is φ = 87980233078.
The previous prime is 87980233073. The next prime is 87980233157. The reversal of 87980233079 is 97033208978.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 87980233079 - 236 = 19260756343 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (87980233073) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990116539 + 43990116540.
It is an arithmetic number, because the mean of its divisors is an integer number (43990116540).
Almost surely, 287980233079 is an apocalyptic number.
87980233079 is a deficient number, since it is larger than the sum of its proper divisors (1).
87980233079 is an equidigital number, since it uses as much as digits as its factorization.
87980233079 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4572288, while the sum is 56.
The spelling of 87980233079 in words is "eighty-seven billion, nine hundred eighty million, two hundred thirty-three thousand, seventy-nine".
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