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205386060312 = 233219122532
BaseRepresentation
bin1011111101000111110…
…1101001001000011000
3201122010201002220020200
42333101331221020120
511331112312412222
6234204132022200
720560441464516
oct2772175511030
9648121086220
10205386060312
117a116093014
123397b461960
13164a214b504
149d255594b6
155521238eac
hex2fd1f69218

205386060312 has 72 divisors (see below), whose sum is σ = 585578225700. Its totient is φ = 64853462592.

The previous prime is 205386060263. The next prime is 205386060343. The reversal of 205386060312 is 213060683502.

It is a happy number.

205386060312 is a `hidden beast` number, since 2 + 0 + 5 + 38 + 6 + 0 + 603 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16755978 + ... + 16768230.

Almost surely, 2205386060312 is an apocalyptic number.

It is an amenable number.

205386060312 is an abundant number, since it is smaller than the sum of its proper divisors (380192165388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205386060312 is an equidigital number, since it uses as much as digits as its factorization.

205386060312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24537 (or 12277 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 205386060312 in words is "two hundred five billion, three hundred eighty-six million, sixty thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 114 152 171 228 342 456 684 1368 12253 24506 36759 49012 73518 98024 110277 147036 220554 232807 294072 441108 465614 698421 882216 931228 1396842 1862456 2095263 2793684 4190526 5587368 8381052 16762104 150136009 300272018 450408027 600544036 900816054 1201088072 1351224081 1801632108 2702448162 2852584171 3603264216 5404896324 5705168342 8557752513 10809792648 11410336684 17115505026 22820673368 25673257539 34231010052 51346515078 68462020104 102693030156 205386060312