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12880665319 is a prime number
BaseRepresentation
bin10111111111011111…
…10101101011100111
31020020200020121001111
423333233311223213
5202334422242234
65530045205451
7634123564054
oct137757655347
936220217044
1012880665319
11550a888555
1225b5860887
1312a374b872
148a298402b
15505c2d664
hex2ffbf5ae7

12880665319 has 2 divisors, whose sum is σ = 12880665320. Its totient is φ = 12880665318.

The previous prime is 12880665257. The next prime is 12880665359. The reversal of 12880665319 is 91356608821.

It is a strong prime.

It is an emirp because it is prime and its reverse (91356608821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12880665319 - 221 = 12878568167 is a prime.

It is a super-2 number, since 2×128806653192 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12880665359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440332659 + 6440332660.

It is an arithmetic number, because the mean of its divisors is an integer number (6440332660).

Almost surely, 212880665319 is an apocalyptic number.

12880665319 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880665319 is an equidigital number, since it uses as much as digits as its factorization.

12880665319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 12880665319 in words is "twelve billion, eight hundred eighty million, six hundred sixty-five thousand, three hundred nineteen".