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20081337855 = 3517939718839
BaseRepresentation
bin10010101100111100…
…001110010111111111
31220211111120122210220
4102230330032113333
5312111310302410
613120352432423
71310430361335
oct225474162777
956744518726
1020081337855
118575434397
123a85248713
131b804b5c47
14d87019b55
157c7e86070
hex4acf0e5ff

20081337855 has 32 divisors (see below), whose sum is σ = 32392742400. Its totient is φ = 10622823552.

The previous prime is 20081337847. The next prime is 20081337893. The reversal of 20081337855 is 55873318002.

It is not a de Polignac number, because 20081337855 - 23 = 20081337847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056526 + ... + 1075364.

It is an arithmetic number, because the mean of its divisors is an integer number (1012273200).

Almost surely, 220081337855 is an apocalyptic number.

20081337855 is a deficient number, since it is larger than the sum of its proper divisors (12311404545).

20081337855 is a wasteful number, since it uses less digits than its factorization.

20081337855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19423.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 20081337855 in words is "twenty billion, eighty-one million, three hundred thirty-seven thousand, eight hundred fifty-five".

Divisors: 1 3 5 15 179 397 537 895 1191 1985 2685 5955 18839 56517 71063 94195 213189 282585 355315 1065945 3372181 7479083 10116543 16860905 22437249 37395415 50582715 112186245 1338755857 4016267571 6693779285 20081337855