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80805553055 = 5195914416691
BaseRepresentation
bin100101101000001100…
…0101110001110011111
321201120110220102001022
41023100120232032133
52310442210144210
6101042131234355
75560302603533
oct1132030561637
9251513812038
1080805553055
11312a66a0007
12137b17489bb
137809cb0426
143ca7b4bbc3
15217e091155
hex12d062e39f

80805553055 has 16 divisors (see below), whose sum is σ = 103800182400. Its totient is φ = 60204097440.

The previous prime is 80805553039. The next prime is 80805553057. The reversal of 80805553055 is 55035550808.

It is a happy number.

It is not a de Polignac number, because 80805553055 - 24 = 80805553039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80805552997 and 80805553015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80805553057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7202741 + ... + 7213950.

It is an arithmetic number, because the mean of its divisors is an integer number (6487511400).

Almost surely, 280805553055 is an apocalyptic number.

80805553055 is a deficient number, since it is larger than the sum of its proper divisors (22994629345).

80805553055 is a wasteful number, since it uses less digits than its factorization.

80805553055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14416774.

The product of its (nonzero) digits is 600000, while the sum is 44.

The spelling of 80805553055 in words is "eighty billion, eight hundred five million, five hundred fifty-three thousand, fifty-five".

Divisors: 1 5 19 59 95 295 1121 5605 14416691 72083455 273917129 850584769 1369585645 4252923845 16161110611 80805553055