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12643159523 is a prime number
BaseRepresentation
bin10111100011001011…
…10100110111100011
31012122010100001100112
423301211310313203
5201343122101043
65450322441535
7625211040251
oct136145646743
935563301315
1012643159523
1153a8808975
12254a2032ab
1312664920a7
1487d1db5d1
154dee66518
hex2f1974de3

12643159523 has 2 divisors, whose sum is σ = 12643159524. Its totient is φ = 12643159522.

The previous prime is 12643159411. The next prime is 12643159537. The reversal of 12643159523 is 32595134621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12643159523 - 220 = 12642110947 is a prime.

It is not a weakly prime, because it can be changed into another prime (12643159723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321579761 + 6321579762.

It is an arithmetic number, because the mean of its divisors is an integer number (6321579762).

Almost surely, 212643159523 is an apocalyptic number.

12643159523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643159523 is an equidigital number, since it uses as much as digits as its factorization.

12643159523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The spelling of 12643159523 in words is "twelve billion, six hundred forty-three million, one hundred fifty-nine thousand, five hundred twenty-three".