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12666984284 = 2217041185831
BaseRepresentation
bin10111100110000001…
…01101011101011100
31012200210011110210002
423303000231131130
5201420221444114
65452533233432
7625620406223
oct136300553534
935623143702
1012666984284
115410200859
122556192878
13126b3b4396
1488243dcba
154e20c07de
hex2f302d75c

12666984284 has 12 divisors (see below), whose sum is σ = 22168642608. Its totient is φ = 6333086400.

The previous prime is 12666984229. The next prime is 12666984293. The reversal of 12666984284 is 48248966621.

It is a super-2 number, since 2×126669842842 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24752 + ... + 161079.

It is an arithmetic number, because the mean of its divisors is an integer number (1847386884).

Almost surely, 212666984284 is an apocalyptic number.

It is an amenable number.

12666984284 is a deficient number, since it is larger than the sum of its proper divisors (9501658324).

12666984284 is a wasteful number, since it uses less digits than its factorization.

12666984284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202876 (or 202874 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 56.

The spelling of 12666984284 in words is "twelve billion, six hundred sixty-six million, nine hundred eighty-four thousand, two hundred eighty-four".

Divisors: 1 2 4 17041 34082 68164 185831 371662 743324 3166746071 6333492142 12666984284