Base | Representation |
---|---|
bin | 10111011111000011… |
… | …00101010100000101 |
3 | 1012112201002210120000 |
4 | 23233201211110011 |
5 | 201310233232210 |
6 | 5443043431513 |
7 | 624310264146 |
oct | 135741452405 |
9 | 35481083500 |
10 | 12608492805 |
11 | 5390190297 |
12 | 253a685599 |
13 | 125c244c3c |
14 | 878775acd |
15 | 4dbdb9ac0 |
hex | 2ef865505 |
12608492805 has 40 divisors (see below), whose sum is σ = 22623925632. Its totient is φ = 6717974112.
The previous prime is 12608492791. The next prime is 12608492857. The reversal of 12608492805 is 50829480621.
12608492805 is a `hidden beast` number, since 12 + 608 + 4 + 9 + 28 + 0 + 5 = 666.
12608492805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12608492805 - 210 = 12608491781 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 415872 + ... + 445158.
Almost surely, 212608492805 is an apocalyptic number.
12608492805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12608492805 is a deficient number, since it is larger than the sum of its proper divisors (10015432827).
12608492805 is a wasteful number, since it uses less digits than its factorization.
12608492805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30367 (or 30358 counting only the distinct ones).
The product of its (nonzero) digits is 276480, while the sum is 45.
The spelling of 12608492805 in words is "twelve billion, six hundred eight million, four hundred ninety-two thousand, eight hundred five".
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