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12808587419 is a prime number
BaseRepresentation
bin10111110110111001…
…11000100010011011
31020001122121122202122
423323130320202123
5202212444244134
65514552251455
7632260124315
oct137334704233
936048548678
1012808587419
115483128341
1225956a0b8b
131291833314
148971807b5
154ee74202e
hex2fb73889b

12808587419 has 2 divisors, whose sum is σ = 12808587420. Its totient is φ = 12808587418.

The previous prime is 12808587391. The next prime is 12808587497. The reversal of 12808587419 is 91478580821.

It is a weak prime.

It is an emirp because it is prime and its reverse (91478580821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12808587419 is a prime.

It is a super-2 number, since 2×128085874192 (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12808587019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404293709 + 6404293710.

It is an arithmetic number, because the mean of its divisors is an integer number (6404293710).

Almost surely, 212808587419 is an apocalyptic number.

12808587419 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808587419 is an equidigital number, since it uses as much as digits as its factorization.

12808587419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 12808587419 in words is "twelve billion, eight hundred eight million, five hundred eighty-seven thousand, four hundred nineteen".