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8680043005 = 517102118153
BaseRepresentation
bin10000001010101111…
…01111000111111101
3211101221000212112021
420011113233013331
5120234042334010
63553151240141
7425046101554
oct100527570775
924357025467
108680043005
113754726867
121822b19051
13a843b582a
145c4b28d9b
1535c0798da
hex2055ef1fd

8680043005 has 8 divisors (see below), whose sum is σ = 11028760632. Its totient is φ = 6535561728.

The previous prime is 8680043003. The next prime is 8680043033. The reversal of 8680043005 is 5003400868.

It can be written as a sum of positive squares in 4 ways, for example, as 2083192164 + 6596850841 = 45642^2 + 81221^2 .

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 8680043005 - 21 = 8680043003 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 (8680043003) 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, 51058992 + ... + 51059161.

It is an arithmetic number, because the mean of its divisors is an integer number (1378595079).

Almost surely, 28680043005 is an apocalyptic number.

8680043005 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8680043005 is a deficient number, since it is larger than the sum of its proper divisors (2348717627).

8680043005 is a wasteful number, since it uses less digits than its factorization.

8680043005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102118175.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 8680043005 is about 93166.7483869648. The cubic root of 8680043005 is about 2055.1362779448.

The spelling of 8680043005 in words is "eight billion, six hundred eighty million, forty-three thousand, five".

Divisors: 1 5 17 85 102118153 510590765 1736008601 8680043005