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12812741757 = 34169993103
BaseRepresentation
bin10111110111011001…
…01110110001111101
31020001221102201110000
423323230232301331
5202220030214012
65515221304513
7632340336144
oct137354566175
936057381400
1012812741757
115485505582
122596b65139
1312926591ca
1489794275b
154eecb2ddc
hex2fbb2ec7d

12812741757 has 20 divisors (see below), whose sum is σ = 19151492800. Its totient is φ = 8536708584.

The previous prime is 12812741731. The next prime is 12812741797. The reversal of 12812741757 is 75714721821.

It is a happy number.

It is not a de Polignac number, because 12812741757 - 26 = 12812741693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812741707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 91068 + ... + 184170.

It is an arithmetic number, because the mean of its divisors is an integer number (957574640).

Almost surely, 212812741757 is an apocalyptic number.

It is an amenable number.

12812741757 is a deficient number, since it is larger than the sum of its proper divisors (6338751043).

12812741757 is an equidigital number, since it uses as much as digits as its factorization.

12812741757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94814 (or 94805 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The spelling of 12812741757 in words is "twelve billion, eight hundred twelve million, seven hundred forty-one thousand, seven hundred fifty-seven".

Divisors: 1 3 9 27 81 1699 5097 15291 45873 93103 137619 279309 837927 2513781 7541343 158181997 474545991 1423637973 4270913919 12812741757