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12560454191 is a prime number
BaseRepresentation
bin10111011001010100…
…10101001000101111
31012102100201011222002
423230222111020233
5201210434013231
65434210042515
7623155045655
oct135452251057
935370634862
1012560454191
11536605a15a
12252657943b
1312522c551c
1487222cdd5
154d7a7b0cb
hex2eca9522f

12560454191 has 2 divisors, whose sum is σ = 12560454192. Its totient is φ = 12560454190.

The previous prime is 12560454083. The next prime is 12560454217. The reversal of 12560454191 is 19145406521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12560454191 - 210 = 12560453167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12560451191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6280227095 + 6280227096.

It is an arithmetic number, because the mean of its divisors is an integer number (6280227096).

Almost surely, 212560454191 is an apocalyptic number.

12560454191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12560454191 is an equidigital number, since it uses as much as digits as its factorization.

12560454191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 12560454191 in words is "twelve billion, five hundred sixty million, four hundred fifty-four thousand, one hundred ninety-one".