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12743814805 = 517219464171
BaseRepresentation
bin10111101111001011…
…10010111010010101
31012220010201212102221
423313211302322111
5202044404033210
65504320102341
7630542432011
oct136745627225
935803655387
1012743814805
11544a607757
122577a649b1
1312812a4c27
1488c71d541
154e8bea1da
hex2f7972e95

12743814805 has 24 divisors (see below), whose sum is σ = 17100096480. Its totient is φ = 9090305280.

The previous prime is 12743814803. The next prime is 12743814857. The reversal of 12743814805 is 50841834721.

It is not a de Polignac number, because 12743814805 - 21 = 12743814803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12743814803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204631 + ... + 259540.

It is an arithmetic number, because the mean of its divisors is an integer number (712504020).

Almost surely, 212743814805 is an apocalyptic number.

It is an amenable number.

12743814805 is a deficient number, since it is larger than the sum of its proper divisors (4356281675).

12743814805 is a wasteful number, since it uses less digits than its factorization.

12743814805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464229 (or 464212 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 12743814805 in words is "twelve billion, seven hundred forty-three million, eight hundred fourteen thousand, eight hundred five".

Divisors: 1 5 17 19 85 95 289 323 1445 1615 5491 27455 464171 2320855 7890907 8819249 39454535 44096245 134145419 149927233 670727095 749636165 2548762961 12743814805