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12663168154 = 2713157443171
BaseRepresentation
bin10111100101100100…
…01001110010011010
31012200111222121000221
423302302021302122
5201413232340104
65452315350254
7625543103410
oct136262116232
935614877027
1012663168154
11540903472a
122554a5238a
13126a679410
14881b292b0
154e1ab9c54
hex2f2c89c9a

12663168154 has 32 divisors (see below), whose sum is σ = 23527115136. Its totient is φ = 4977685440.

The previous prime is 12663168149. The next prime is 12663168197. The reversal of 12663168154 is 45186136621.

12663168154 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12663168154.

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 15 ways as a sum of consecutive naturals, for example, 193012 + ... + 250159.

It is an arithmetic number, because the mean of its divisors is an integer number (735222348).

Almost surely, 212663168154 is an apocalyptic number.

12663168154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12663168154 is a deficient number, since it is larger than the sum of its proper divisors (10863946982).

12663168154 is a wasteful number, since it uses less digits than its factorization.

12663168154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443350.

The product of its digits is 207360, while the sum is 43.

The spelling of 12663168154 in words is "twelve billion, six hundred sixty-three million, one hundred sixty-eight thousand, one hundred fifty-four".

Divisors: 1 2 7 13 14 26 91 157 182 314 1099 2041 2198 4082 14287 28574 443171 886342 3102197 5761223 6204394 11522446 40328561 69577847 80657122 139155694 487044929 904512011 974089858 1809024022 6331584077 12663168154