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12655905548 = 221113191164511
BaseRepresentation
bin10111100100101100…
…11100101100001100
31012200000022121121112
423302112130230030
5201404402434143
65451455551152
7625424264546
oct136226345414
935600277545
1012655905548
115404a24180
12255252b4b8
131269005810
14880b98696
154e1132e18
hex2f259cb0c

12655905548 has 48 divisors (see below), whose sum is σ = 27389322240. Its totient is φ = 5030683200.

The previous prime is 12655905547. The next prime is 12655905553. The reversal of 12655905548 is 84550955621.

It is a happy number.

12655905548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12655905496 and 12655905505.

It is not an unprimeable number, because it can be changed into a prime (12655905547) by changing a digit.

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, 571388 + ... + 593123.

It is an arithmetic number, because the mean of its divisors is an integer number (570610880).

Almost surely, 212655905548 is an apocalyptic number.

It is an amenable number.

12655905548 is an abundant number, since it is smaller than the sum of its proper divisors (14733416692).

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

12655905548 is a wasteful number, since it uses less digits than its factorization.

12655905548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164558 (or 1164556 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 12655905548 in words is "twelve billion, six hundred fifty-five million, nine hundred five thousand, five hundred forty-eight".

Divisors: 1 2 4 11 13 19 22 26 38 44 52 76 143 209 247 286 418 494 572 836 988 2717 5434 10868 1164511 2329022 4658044 12809621 15138643 22125709 25619242 30277286 44251418 51238484 60554572 88502836 166525073 243382799 287634217 333050146 486765598 575268434 666100292 973531196 1150536868 3163976387 6327952774 12655905548