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128050785385 = 572859351503
BaseRepresentation
bin111011101000001101…
…0111110110001101001
3110020112002010212211221
41313100122332301221
54044222000113020
6134454204422041
712152134500625
oct1672032766151
9406462125757
10128050785385
114a34036a366
1220997b47921
13c0c90cc1c3
1462aa670185
1534e6b836aa
hex1dd06bec69

128050785385 has 8 divisors (see below), whose sum is σ = 153663488640. Its totient is φ = 102438930864.

The previous prime is 128050785377. The next prime is 128050785389. The reversal of 128050785385 is 583587050821.

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 128050785385 - 23 = 128050785377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128050785389) 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, 188544 + ... + 540046.

It is an arithmetic number, because the mean of its divisors is an integer number (19207936080).

Almost surely, 2128050785385 is an apocalyptic number.

It is an amenable number.

128050785385 is a deficient number, since it is larger than the sum of its proper divisors (25612703255).

128050785385 is an equidigital number, since it uses as much as digits as its factorization.

128050785385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424367.

The product of its (nonzero) digits is 2688000, while the sum is 52.

The spelling of 128050785385 in words is "one hundred twenty-eight billion, fifty million, seven hundred eighty-five thousand, three hundred eighty-five".

Divisors: 1 5 72859 351503 364295 1757515 25610157077 128050785385