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54123137609 = 1710987289771
BaseRepresentation
bin110010011001111111…
…011000101001001001
312011200221020021010012
4302121333120221021
51341321010400414
640510330401305
73624136036052
oct623177305111
9164627207105
1054123137609
1120a541113a2
12a5a5890235
135147046518
142896179729
15161b84033e
hexc99fd8a49

54123137609 has 8 divisors (see below), whose sum is σ = 57312265248. Its totient is φ = 50934611520.

The previous prime is 54123137597. The next prime is 54123137633. The reversal of 54123137609 is 90673132145.

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 54123137609 - 28 = 54123137353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54123137659) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41894 + ... + 331664.

It is an arithmetic number, because the mean of its divisors is an integer number (7164033156).

Almost surely, 254123137609 is an apocalyptic number.

It is an amenable number.

54123137609 is a deficient number, since it is larger than the sum of its proper divisors (3189127639).

54123137609 is a wasteful number, since it uses less digits than its factorization.

54123137609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300775.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 54123137609 in words is "fifty-four billion, one hundred twenty-three million, one hundred thirty-seven thousand, six hundred nine".

Divisors: 1 17 10987 186779 289771 4926107 3183713977 54123137609