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12799882188 = 2232355552283
BaseRepresentation
bin10111110101110111…
…01011001111001100
31020001001020101102200
423322323223033030
5202203232212223
65514041521500
7632123126532
oct137273531714
936031211380
1012799882188
115479221a35
1225927a3290
13128caa5bb2
14895d56152
154edac2a43
hex2faeeb3cc

12799882188 has 18 divisors (see below), whose sum is σ = 32355257844. Its totient is φ = 4266627384.

The previous prime is 12799882187. The next prime is 12799882217. The reversal of 12799882188 is 88128899721.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (12799882181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177776106 + ... + 177776177.

Almost surely, 212799882188 is an apocalyptic number.

12799882188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12799882188 is an abundant number, since it is smaller than the sum of its proper divisors (19555375656).

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

12799882188 is a wasteful number, since it uses less digits than its factorization.

12799882188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355552293 (or 355552288 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 63.

The spelling of 12799882188 in words is "twelve billion, seven hundred ninety-nine million, eight hundred eighty-two thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 355552283 711104566 1066656849 1422209132 2133313698 3199970547 4266627396 6399941094 12799882188