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80668080811 = 2912569221311
BaseRepresentation
bin100101100100000110…
…0010011101010101011
321201012220020002120201
41023020030103222223
52310202012041221
6101020340533031
75554013242033
oct1131014235253
9251186202521
1080668080811
113123603508a
12137736b1177
1377b76797c6
143c937a48c3
152171e88891
hex12c8313aab

80668080811 has 8 divisors (see below), whose sum is σ = 83456755200. Its totient is φ = 77879874240.

The previous prime is 80668080739. The next prime is 80668080827. The reversal of 80668080811 is 11808086608.

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 80668080811 - 223 = 80659692203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80668080881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253846 + ... + 475156.

It is an arithmetic number, because the mean of its divisors is an integer number (10432094400).

Almost surely, 280668080811 is an apocalyptic number.

80668080811 is a deficient number, since it is larger than the sum of its proper divisors (2788674389).

80668080811 is a wasteful number, since it uses less digits than its factorization.

80668080811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233909.

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 80668080811 in words is "eighty billion, six hundred sixty-eight million, eighty thousand, eight hundred eleven".

Divisors: 1 29 12569 221311 364501 6418019 2781657959 80668080811