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12345556666679 = 17790369918823
BaseRepresentation
bin1011001110100110110010…
…0001010000100100110111
31121201020001001220120201122
42303221230201100210313
53104232200001313204
642131245340414155
72412636255142145
oct263515441204467
947636031816648
1012345556666679
113a2a7a2988055
121474799b4735b
136b72478653a2
14309757296595
15166209d2b0be
hexb3a6c850937

12345556666679 has 8 divisors (see below), whose sum is σ = 13071796647840. Its totient is φ = 11619320103936.

The previous prime is 12345556666673. The next prime is 12345556666687. The reversal of 12345556666679 is 97666665554321.

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 12345556666679 - 232 = 12341261699383 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345556666673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12976862 + ... + 13895684.

It is an arithmetic number, because the mean of its divisors is an integer number (1633974580980).

Almost surely, 212345556666679 is an apocalyptic number.

12345556666679 is a deficient number, since it is larger than the sum of its proper divisors (726239981161).

12345556666679 is an equidigital number, since it uses as much as digits as its factorization.

12345556666679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709209.

The product of its digits is 1469664000, while the sum is 71.

The spelling of 12345556666679 in words is "twelve trillion, three hundred forty-five billion, five hundred fifty-six million, six hundred sixty-six thousand, six hundred seventy-nine".

Divisors: 1 17 790369 918823 13436273 15619991 726209215687 12345556666679