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12910065800 = 235264550329
BaseRepresentation
bin11000000010111111…
…11111100010001000
31020022201120021221012
430001133333202020
5202414434101200
65533015303052
7634631514542
oct140137774210
936281507835
1012910065800
115525439575
12260367aa88
1312a98739b8
148a6838692
155085d9a35
hex3017ff888

12910065800 has 24 divisors (see below), whose sum is σ = 30015903450. Its totient is φ = 5164026240.

The previous prime is 12910065787. The next prime is 12910065811. The reversal of 12910065800 is 856001921.

12910065800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5776912036 + 7133153764 = 76006^2 + 84458^2 .

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 5 ways as a sum of consecutive naturals, for example, 32274965 + ... + 32275364.

Almost surely, 212910065800 is an apocalyptic number.

12910065800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12910065800 is an abundant number, since it is smaller than the sum of its proper divisors (17105837650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12910065800 is a wasteful number, since it uses less digits than its factorization.

12910065800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64550345 (or 64550336 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 12910065800 in words is "twelve billion, nine hundred ten million, sixty-five thousand, eight hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 64550329 129100658 258201316 322751645 516402632 645503290 1291006580 1613758225 2582013160 3227516450 6455032900 12910065800