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12641006317 = 43928795003
BaseRepresentation
bin10111100010111011…
…00111001011101101
31012121222021122201011
423301131213023231
5201342044200232
65450204345221
7625153531552
oct136135471355
935558248634
1012641006317
1153a7578165
122549545211
131265bb9cc4
1487cbdaa29
154deb8d547
hex2f17672ed

12641006317 has 4 divisors (see below), whose sum is σ = 12669801760. Its totient is φ = 12612210876.

The previous prime is 12641006297. The next prime is 12641006461. The reversal of 12641006317 is 71360014621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12641006317 - 211 = 12641004269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641006117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14397063 + ... + 14397940.

It is an arithmetic number, because the mean of its divisors is an integer number (3167450440).

Almost surely, 212641006317 is an apocalyptic number.

It is an amenable number.

12641006317 is a deficient number, since it is larger than the sum of its proper divisors (28795443).

12641006317 is an equidigital number, since it uses as much as digits as its factorization.

12641006317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28795442.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 12641006317 in words is "twelve billion, six hundred forty-one million, six thousand, three hundred seventeen".

Divisors: 1 439 28795003 12641006317