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12708448705 = 54705754013
BaseRepresentation
bin10111101010111101…
…11000100111000001
31012210200012002021101
423311132320213001
5202011330324310
65501014054401
7626633013601
oct136536704701
935720162241
1012708448705
115431651677
12256804a401
131276b71644
14887b54c01
154e5a6143a
hex2f57b89c1

12708448705 has 8 divisors (see below), whose sum is σ = 15250744872. Its totient is φ = 10166354688.

The previous prime is 12708448633. The next prime is 12708448721. The reversal of 12708448705 is 50784480721.

It can be written as a sum of positive squares in 4 ways, for example, as 532871056 + 12175577649 = 23084^2 + 110343^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12708448705 - 213 = 12708440513 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 208279 + ... + 262291.

It is an arithmetic number, because the mean of its divisors is an integer number (1906343109).

Almost surely, 212708448705 is an apocalyptic number.

It is an amenable number.

12708448705 is a deficient number, since it is larger than the sum of its proper divisors (2542296167).

12708448705 is an equidigital number, since it uses as much as digits as its factorization.

12708448705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101075.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 12708448705 in words is "twelve billion, seven hundred eight million, four hundred forty-eight thousand, seven hundred five".

Divisors: 1 5 47057 54013 235285 270065 2541689741 12708448705