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12648083261 = 112100154751
BaseRepresentation
bin10111100011110001…
…00110111100111101
31012122110121012110012
423301320212330331
5201400402131021
65451020153005
7625300635212
oct136170467475
935573535405
1012648083261
115400571180
12254b998765
1312674c7248
1487db1db09
154e05da35b
hex2f1e26f3d

12648083261 has 8 divisors (see below), whose sum is σ = 13798818048. Its totient is φ = 11497500000.

The previous prime is 12648083251. The next prime is 12648083263. The reversal of 12648083261 is 16238084621.

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

It is a cyclic number.

It is not a de Polignac number, because 12648083261 - 218 = 12647821117 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 (12648083263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203636 + ... + 258386.

It is an arithmetic number, because the mean of its divisors is an integer number (1724852256).

Almost surely, 212648083261 is an apocalyptic number.

12648083261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12648083261 is a deficient number, since it is larger than the sum of its proper divisors (1150734787).

12648083261 is a wasteful number, since it uses less digits than its factorization.

12648083261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75763.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 12648083261 in words is "twelve billion, six hundred forty-eight million, eighty-three thousand, two hundred sixty-one".

Divisors: 1 11 21001 54751 231011 602261 1149825751 12648083261