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12806000689 is a prime number
BaseRepresentation
bin10111110110100110…
…00001000000110001
31020001110202020102211
423323103001000301
5202211314010224
65514421012121
7632226131656
oct137323010061
936043666384
1012806000689
115481720949
122594854041
131291138b01
14896aa9c2d
154ee3d0894
hex2fb4c1031

12806000689 has 2 divisors, whose sum is σ = 12806000690. Its totient is φ = 12806000688.

The previous prime is 12806000621. The next prime is 12806000717. The reversal of 12806000689 is 98600060821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10043447089 + 2762553600 = 100217^2 + 52560^2 .

It is a cyclic number.

It is not a de Polignac number, because 12806000689 - 27 = 12806000561 is a prime.

It is not a weakly prime, because it can be changed into another prime (12806070689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403000344 + 6403000345.

It is an arithmetic number, because the mean of its divisors is an integer number (6403000345).

Almost surely, 212806000689 is an apocalyptic number.

It is an amenable number.

12806000689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12806000689 is an equidigital number, since it uses as much as digits as its factorization.

12806000689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 12806000689 in words is "twelve billion, eight hundred six million, six hundred eighty-nine", and thus it is an aban number.