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12911069271 = 3171149122031
BaseRepresentation
bin11000000011000111…
…10100100001010111
31020022210110021102210
430001203310201113
5202420213204041
65533053004503
7634643164242
oct140143644127
936283407383
1012911069271
115525a64491
122603a83733
1312a9b35679
148a6a1a259
15508737016
hex3018f4857

12911069271 has 16 divisors (see below), whose sum is σ = 18229805568. Its totient is φ = 8099990400.

The previous prime is 12911069267. The next prime is 12911069287. The reversal of 12911069271 is 17296011921.

It is not a de Polignac number, because 12911069271 - 22 = 12911069267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911069201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575026 + ... + 597056.

It is an arithmetic number, because the mean of its divisors is an integer number (1139362848).

Almost surely, 212911069271 is an apocalyptic number.

12911069271 is a deficient number, since it is larger than the sum of its proper divisors (5318736297).

12911069271 is a wasteful number, since it uses less digits than its factorization.

12911069271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33542.

The product of its (nonzero) digits is 13608, while the sum is 39.

The spelling of 12911069271 in words is "twelve billion, nine hundred eleven million, sixty-nine thousand, two hundred seventy-one".

Divisors: 1 3 17 51 11491 22031 34473 66093 195347 374527 586041 1123581 253158221 759474663 4303689757 12911069271