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13178666868 = 22323462110333
BaseRepresentation
bin11000100011000001…
…00111111101110100
31021000102222122022220
430101200213331310
5203442214314433
610015412322340
7644402551203
oct142140477564
937012878286
1013178666868
115653017524
1226796133b0
1313203c9b43
148d039723a
15521e952b3
hex311827f74

13178666868 has 48 divisors (see below), whose sum is σ = 32097238656. Its totient is φ = 4200577920.

The previous prime is 13178666833. The next prime is 13178666887. The reversal of 13178666868 is 86866687131.

13178666868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 1270230 + ... + 1280562.

It is an arithmetic number, because the mean of its divisors is an integer number (668692472).

Almost surely, 213178666868 is an apocalyptic number.

It is an amenable number.

13178666868 is an abundant number, since it is smaller than the sum of its proper divisors (18918571788).

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

13178666868 is a wasteful number, since it uses less digits than its factorization.

13178666868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14984 (or 14982 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The spelling of 13178666868 in words is "thirteen billion, one hundred seventy-eight million, six hundred sixty-six thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 4621 9242 10333 13863 18484 20666 27726 30999 41332 55452 61998 106283 123996 212566 237659 318849 425132 475318 637698 712977 950636 1275396 1425954 2851908 47748793 95497586 143246379 190995172 286492758 572985516 1098222239 2196444478 3294666717 4392888956 6589333434 13178666868