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12841287621 = 313013290107
BaseRepresentation
bin10111111010110011…
…00111111111000101
31020010221011000000020
423331121213333011
5202244332200441
65522121205353
7633135100221
oct137531477705
936127130006
1012841287621
11549a6324a8
1225a4630859
131298542356
1489b653781
15502550e66
hex2fd667fc5

12841287621 has 8 divisors (see below), whose sum is σ = 17134882464. Its totient is φ = 8554275600.

The previous prime is 12841287593. The next prime is 12841287629. The reversal of 12841287621 is 12678214821.

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

It is not a de Polignac number, because 12841287621 - 214 = 12841271237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12841287629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641151 + ... + 1648956.

It is an arithmetic number, because the mean of its divisors is an integer number (2141860308).

Almost surely, 212841287621 is an apocalyptic number.

It is an amenable number.

12841287621 is a deficient number, since it is larger than the sum of its proper divisors (4293594843).

12841287621 is a wasteful number, since it uses less digits than its factorization.

12841287621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291411.

The product of its digits is 86016, while the sum is 42.

The spelling of 12841287621 in words is "twelve billion, eight hundred forty-one million, two hundred eighty-seven thousand, six hundred twenty-one".

Divisors: 1 3 1301 3903 3290107 9870321 4280429207 12841287621