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87230087165 = 5131342001341
BaseRepresentation
bin101000100111101010…
…0010111111111111101
322100011012210120001002
41101033110113333331
52412121400242130
6104023431300045
76205433335634
oct1211724277775
9270135716032
1087230087165
1133aa3123631
1214aa521a625
1382c1cca8c0
1443170aa51b
1524080d6b45
hex144f517ffd

87230087165 has 8 divisors (see below), whose sum is σ = 112728112728. Its totient is φ = 64416064320.

The previous prime is 87230087137. The next prime is 87230087177. The reversal of 87230087165 is 56178003278.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9485591236 + 77744495929 = 97394^2 + 278827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-87230087165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671000606 + ... + 671000735.

It is an arithmetic number, because the mean of its divisors is an integer number (14091014091).

Almost surely, 287230087165 is an apocalyptic number.

It is an amenable number.

87230087165 is a deficient number, since it is larger than the sum of its proper divisors (25498025563).

87230087165 is a wasteful number, since it uses less digits than its factorization.

87230087165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342001359.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 87230087165 in words is "eighty-seven billion, two hundred thirty million, eighty-seven thousand, one hundred sixty-five".

Divisors: 1 5 13 65 1342001341 6710006705 17446017433 87230087165