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81085014327 = 3194673046133
BaseRepresentation
bin100101110000100001…
…0110010000100110111
321202021221202111211210
41023201002302010313
52312030230424302
6101125553132503
75600235151452
oct1134102620467
9252257674753
1081085014327
113142a416439
121386b25a133
137852b69825
143cd2cd6499
15219889466c
hex12e10b2137

81085014327 has 16 divisors (see below), whose sum is σ = 114047256960. Its totient is φ = 51101910432.

The previous prime is 81085014319. The next prime is 81085014379. The reversal of 81085014327 is 72341058018.

It is not a de Polignac number, because 81085014327 - 23 = 81085014319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81085014397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1496448 + ... + 1549685.

It is an arithmetic number, because the mean of its divisors is an integer number (7127953560).

Almost surely, 281085014327 is an apocalyptic number.

81085014327 is a deficient number, since it is larger than the sum of its proper divisors (32962242633).

81085014327 is a wasteful number, since it uses less digits than its factorization.

81085014327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046622.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 81085014327 in words is "eighty-one billion, eighty-five million, fourteen thousand, three hundred twenty-seven".

Divisors: 1 3 19 57 467 1401 8873 26619 3046133 9138399 57876527 173629581 1422544111 4267632333 27028338109 81085014327