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12660469775 = 52588186111
BaseRepresentation
bin10111100101001111…
…10111000000001111
31012200022220111112222
423302213313000033
5201412040013100
65452141445555
7625511134412
oct136247670017
935608814488
1012660469775
115407561368
122553b708bb
131269c43145
14881625b79
154e1735485
hex2f29f700f

12660469775 has 12 divisors (see below), whose sum is σ = 15701834304. Its totient is φ = 10126536000.

The previous prime is 12660469751. The next prime is 12660469793. The reversal of 12660469775 is 57796406621.

It is not a de Polignac number, because 12660469775 - 218 = 12660207631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103970 + ... + 190080.

It is an arithmetic number, because the mean of its divisors is an integer number (1308486192).

Almost surely, 212660469775 is an apocalyptic number.

12660469775 is a deficient number, since it is larger than the sum of its proper divisors (3041364529).

12660469775 is an equidigital number, since it uses as much as digits as its factorization.

12660469775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92002 (or 91997 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 12660469775 in words is "twelve billion, six hundred sixty million, four hundred sixty-nine thousand, seven hundred seventy-five".

Divisors: 1 5 25 5881 29405 86111 147025 430555 2152775 506418791 2532093955 12660469775