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12871666130 = 251287166613
BaseRepresentation
bin10111111110011011…
…00000100111010010
31020020001022101111012
423333031200213102
5202330121304010
65525124250522
7633654233261
oct137715404722
936201271435
1012871666130
1155057a1304
1225b2840a42
1312a191a6bb
148a16c05d8
15505052005
hex2ff3609d2

12871666130 has 8 divisors (see below), whose sum is σ = 23168999052. Its totient is φ = 5148666448.

The previous prime is 12871666117. The next prime is 12871666163. The reversal of 12871666130 is 3166617821.

It can be written as a sum of positive squares in 2 ways, for example, as 10859515681 + 2012150449 = 104209^2 + 44857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643583297 + ... + 643583316.

Almost surely, 212871666130 is an apocalyptic number.

12871666130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12871666130 is a deficient number, since it is larger than the sum of its proper divisors (10297332922).

12871666130 is a wasteful number, since it uses less digits than its factorization.

12871666130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287166620.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 12871666130 in words is "twelve billion, eight hundred seventy-one million, six hundred sixty-six thousand, one hundred thirty".

Divisors: 1 2 5 10 1287166613 2574333226 6435833065 12871666130