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8105171069 = 19716008281
BaseRepresentation
bin1111000110001101…
…10001100001111101
3202220212022100111002
413203012301201331
5113044410433234
63420133540045
7404565550232
oct74306614175
922825270432
108105171069
11348a180a96
1216a24a4625
139c2277518
1456c643789
1532687227e
hex1e31b187d

8105171069 has 8 divisors (see below), whose sum is σ = 8651926080. Its totient is φ = 7570432800.

The previous prime is 8105171021. The next prime is 8105171117. The reversal of 8105171069 is 9601715018.

It is an interprime number because it is at equal distance from previous prime (8105171021) and next prime (8105171117).

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 8105171069 - 220 = 8104122493 is a prime.

It is a super-2 number, since 2×81051710692 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105171869) 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, 3002792 + ... + 3005489.

It is an arithmetic number, because the mean of its divisors is an integer number (1081490760).

Almost surely, 28105171069 is an apocalyptic number.

It is an amenable number.

8105171069 is a deficient number, since it is larger than the sum of its proper divisors (546755011).

8105171069 is a wasteful number, since it uses less digits than its factorization.

8105171069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008371.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 8105171069 is about 90028.7235775339. The cubic root of 8105171069 is about 2008.7261277263.

The spelling of 8105171069 in words is "eight billion, one hundred five million, one hundred seventy-one thousand, sixty-nine".

Divisors: 1 19 71 1349 6008281 114157339 426587951 8105171069