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8715319871 = 53149163979
BaseRepresentation
bin10000001110111100…
…10011101000111111
3211111101102010021212
420013132103220333
5120322110213441
64000451315035
7425654665556
oct100736235077
924441363255
108715319871
1137726308a5
1218328aba7b
13a8b7b760b
145c96acd9d
153601e6eeb
hex207793a3f

8715319871 has 4 divisors (see below), whose sum is σ = 8715537000. Its totient is φ = 8715102744.

The previous prime is 8715319853. The next prime is 8715319897. The reversal of 8715319871 is 1789135178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8715319871 - 210 = 8715318847 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 (8715309871) 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 3 ways as a sum of consecutive naturals, for example, 28841 + ... + 135138.

It is an arithmetic number, because the mean of its divisors is an integer number (2178884250).

Almost surely, 28715319871 is an apocalyptic number.

8715319871 is a deficient number, since it is larger than the sum of its proper divisors (217129).

8715319871 is a wasteful number, since it uses less digits than its factorization.

8715319871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217128.

The product of its digits is 423360, while the sum is 50.

The square root of 8715319871 is about 93355.8775385889. The cubic root of 8715319871 is about 2057.9166318086.

The spelling of 8715319871 in words is "eight billion, seven hundred fifteen million, three hundred nineteen thousand, eight hundred seventy-one".

Divisors: 1 53149 163979 8715319871