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10487207809 = 131747453429
BaseRepresentation
bin10011100010001011…
…00001011110000001
31000001212112100121001
421301011201132001
5132434211122214
64452345132001
7520611536611
oct116105413601
930055470531
1010487207809
1144a18344a1
12204818a001
13cb1913b10
14716b48a41
15415a4ac74
hex271161781

10487207809 has 8 divisors (see below), whose sum is σ = 11958264360. Its totient is φ = 9111058176.

The previous prime is 10487207803. The next prime is 10487207821. The reversal of 10487207809 is 90870278401.

It can be written as a sum of positive squares in 4 ways, for example, as 2883367809 + 7603840000 = 53697^2 + 87200^2 .

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 10487207809 - 219 = 10486683521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10487207803) 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, 23726494 + ... + 23726935.

It is an arithmetic number, because the mean of its divisors is an integer number (1494783045).

Almost surely, 210487207809 is an apocalyptic number.

It is an amenable number.

10487207809 is a deficient number, since it is larger than the sum of its proper divisors (1471056551).

10487207809 is a wasteful number, since it uses less digits than its factorization.

10487207809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47453459.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 10487207809 in words is "ten billion, four hundred eighty-seven million, two hundred seven thousand, eight hundred nine".

Divisors: 1 13 17 221 47453429 616894577 806708293 10487207809