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12648102555541 = 73859171246599
BaseRepresentation
bin1011100000001101110110…
…1010001110111110010101
31122210010222000101011102211
42320003131222032332111
53124211303223234131
642522242541033421
72443536525566155
oct270033552167625
948703860334384
1012648102555541
114037037180332
121503353b55871
13709931c6c4bb
1431a258592765
1516e015c7c5b1
hexb80dda8ef95

12648102555541 has 4 divisors (see below), whose sum is σ = 12648273876000. Its totient is φ = 12647931235084.

The previous prime is 12648102555481. The next prime is 12648102555551. The reversal of 12648102555541 is 14555520184621.

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 a de Polignac number, because none of the positive numbers 2k-12648102555541 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 (12648102555551) 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, 85549441 + ... + 85697158.

It is an arithmetic number, because the mean of its divisors is an integer number (3162068469000).

Almost surely, 212648102555541 is an apocalyptic number.

It is an amenable number.

12648102555541 is a deficient number, since it is larger than the sum of its proper divisors (171320459).

12648102555541 is an equidigital number, since it uses as much as digits as its factorization.

12648102555541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171320458.

The product of its (nonzero) digits is 1920000, while the sum is 49.

The spelling of 12648102555541 in words is "twelve trillion, six hundred forty-eight billion, one hundred two million, five hundred fifty-five thousand, five hundred forty-one".

Divisors: 1 73859 171246599 12648102555541