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2145145135 = 5775181611
BaseRepresentation
bin111111111011100…
…0101000100101111
312112111110122220211
41333313011010233
513343124121020
6552505523251
7104105301310
oct17767050457
95474418824
102145145135
11a00973321
124ba4a3527
13282566563
14164c7c607
15c84d385a
hex7fdc512f

2145145135 has 16 divisors (see below), whose sum is σ = 2945866752. Its totient is φ = 1468980000.

The previous prime is 2145145063. The next prime is 2145145151. The reversal of 2145145135 is 5315415412.

It is not a de Polignac number, because 2145145135 - 215 = 2145112367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145145097 and 2145145106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14521 + ... + 67090.

It is an arithmetic number, because the mean of its divisors is an integer number (184116672).

Almost surely, 22145145135 is an apocalyptic number.

2145145135 is a deficient number, since it is larger than the sum of its proper divisors (800721617).

2145145135 is an equidigital number, since it uses as much as digits as its factorization.

2145145135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82374.

The product of its digits is 12000, while the sum is 31.

The square root of 2145145135 is about 46315.7115350720. The cubic root of 2145145135 is about 1289.6906765908.

The spelling of 2145145135 in words is "two billion, one hundred forty-five million, one hundred forty-five thousand, one hundred thirty-five".

Divisors: 1 5 7 35 751 3755 5257 26285 81611 408055 571277 2856385 61289861 306449305 429029027 2145145135