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871374386152205 = 513121791711007121
BaseRepresentation
bin1100011000100000101010100…
…0110000001100001100001101
311020021021120121012011111212122
43012020022220300030030031
51403203044220323332310
612325131511114342325
7351353502414024005
oct30610125060141415
94207246535144778
10871374386152205
11232712890332751
128189223aa2a9a5
132b52a3379391c0
1411526a6122b005
156ab16aa389555
hex31882a8c0c30d

871374386152205 has 16 divisors (see below), whose sum is σ = 1126084849007664. Its totient is φ = 643475882972160.

The previous prime is 871374386152199. The next prime is 871374386152247. The reversal of 871374386152205 is 502251683473178.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 320134470859204 + 551239915293001 = 17892302^2 + 23478499^2 .

It is not a de Polignac number, because 871374386152205 - 214 = 871374386135821 is a prime.

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, 73661045 + ... + 84668165.

It is an arithmetic number, because the mean of its divisors is an integer number (70380303062979).

Almost surely, 2871374386152205 is an apocalyptic number.

It is an amenable number.

871374386152205 is a deficient number, since it is larger than the sum of its proper divisors (254710462855459).

871374386152205 is a wasteful number, since it uses less digits than its factorization.

871374386152205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12225056.

The product of its (nonzero) digits is 67737600, while the sum is 62.

The spelling of 871374386152205 in words is "eight hundred seventy-one trillion, three hundred seventy-four billion, three hundred eighty-six million, one hundred fifty-two thousand, two hundred five".

Divisors: 1 5 13 65 1217917 6089585 11007121 15832921 55035605 79164605 143092573 715462865 13405759786957 67028798934785 174274877230441 871374386152205