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12812585168 = 24839648031
BaseRepresentation
bin10111110111011000…
…01000100011010000
31020001221010202122102
423323230020203100
5202220010211133
65515214055532
7632336114465
oct137354104320
936057122572
1012812585168
115485408969
122596aaa5a8
131292602b56
1489790166c
154eec817e8
hex2fbb088d0

12812585168 has 20 divisors (see below), whose sum is σ = 25123475328. Its totient is φ = 6329107680.

The previous prime is 12812585167. The next prime is 12812585173. The reversal of 12812585168 is 86158521821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812585161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4822688 + ... + 4825343.

Almost surely, 212812585168 is an apocalyptic number.

It is an amenable number.

12812585168 is a deficient number, since it is larger than the sum of its proper divisors (12310890160).

12812585168 is an equidigital number, since it uses as much as digits as its factorization.

12812585168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648122 (or 9648116 counting only the distinct ones).

The product of its digits is 307200, while the sum is 47.

The spelling of 12812585168 in words is "twelve billion, eight hundred twelve million, five hundred eighty-five thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 16 83 166 332 664 1328 9648031 19296062 38592124 77184248 154368496 800786573 1601573146 3203146292 6406292584 12812585168