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12745704723 = 34517940573
BaseRepresentation
bin10111101111011010…
…00000010100010011
31012220021021212220220
423313231000110103
5202100400022343
65504424404123
7630564462663
oct136755002423
935807255826
1012745704723
115450688674
122578616643
1312817b721b
1488ca921a3
154e8e70183
hex2f7b40513

12745704723 has 8 divisors (see below), whose sum is σ = 16998053328. Its totient is φ = 8495246304.

The previous prime is 12745704721. The next prime is 12745704731. The reversal of 12745704723 is 32740754721.

12745704723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12745704723 - 21 = 12745704721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12745704721) 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 7 ways as a sum of consecutive naturals, for example, 456736 + ... + 483837.

It is an arithmetic number, because the mean of its divisors is an integer number (2124756666).

Almost surely, 212745704723 is an apocalyptic number.

12745704723 is a deficient number, since it is larger than the sum of its proper divisors (4252348605).

12745704723 is an equidigital number, since it uses as much as digits as its factorization.

12745704723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945093.

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 12745704723 in words is "twelve billion, seven hundred forty-five million, seven hundred four thousand, seven hundred twenty-three".

Divisors: 1 3 4517 13551 940573 2821719 4248568241 12745704723