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667730716433105 = 51313177779599321
BaseRepresentation
bin1001011111010011000010110…
…0001010001001101011010001
310020120020102200201010112122012
42113310300230022021223101
51200010100001401324410
610324051131213352305
7260434644424664543
oct22764605412115321
93216212621115565
10667730716433105
1118383a0087a4896
1262a82829a98695
1322877975a89870
14bac64a6761693
15522e31cebc605
hex25f4c2c289ad1

667730716433105 has 16 divisors (see below), whose sum is σ = 862979028686544. Its totient is φ = 493056030735360.

The previous prime is 667730716433041. The next prime is 667730716433111. The reversal of 667730716433105 is 501334617037766.

It can be written as a sum of positive squares in 8 ways, for example, as 2666241576769 + 665064474856336 = 1632863^2 + 25788844^2 .

It is not a de Polignac number, because 667730716433105 - 26 = 667730716433041 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388943156 + ... + 390656165.

It is an arithmetic number, because the mean of its divisors is an integer number (53936189292909).

Almost surely, 2667730716433105 is an apocalyptic number.

667730716433105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

667730716433105 is a deficient number, since it is larger than the sum of its proper divisors (195248312253439).

667730716433105 is a wasteful number, since it uses less digits than its factorization.

667730716433105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779612516.

The product of its (nonzero) digits is 40007520, while the sum is 59.

The spelling of 667730716433105 in words is "six hundred sixty-seven trillion, seven hundred thirty billion, seven hundred sixteen million, four hundred thirty-three thousand, one hundred five".

Divisors: 1 5 13 65 13177 65885 171301 856505 779599321 3897996605 10134791173 50673955865 10272780252817 51363901264085 133546143286621 667730716433105